Disable CocoaPods input and output paths in Xcode build phase and adopt new Xcode build system (#34167)

Updates the Podfile template to use the CocoaPod disable_input_output_paths installation option which prevents the [CP] Embed Pods Frameworks build phase from outputting the Flutter.framework files.
diff --git a/packages/flutter_tools/test/commands/create_test.dart b/packages/flutter_tools/test/commands/create_test.dart
index 3707b62..22fe447 100644
--- a/packages/flutter_tools/test/commands/create_test.dart
+++ b/packages/flutter_tools/test/commands/create_test.dart
@@ -507,8 +507,8 @@
 
     await runner.run(<String>['create', '--template=module', '--no-pub', '--org', 'com.foo.bar', projectDir.path]);
 
-    void expectExists(String relPath) {
-      expect(fs.isFileSync('${projectDir.path}/$relPath'), true);
+    void expectExists(String relPath, [bool expectation = true]) {
+      expect(fs.isFileSync('${projectDir.path}/$relPath'), expectation);
     }
 
     expectExists('lib/main.dart');
@@ -549,6 +549,9 @@
     final File xcodeProjectFile = fs.file(fs.path.join(projectDir.path, xcodeProjectPath));
     final String xcodeProject = xcodeProjectFile.readAsStringSync();
     expect(xcodeProject, contains('PRODUCT_BUNDLE_IDENTIFIER = com.foo.bar.flutterProject'));
+    // Xcode build system
+    final String xcodeWorkspaceSettingsPath = fs.path.join('.ios', 'Runner.xcworkspace', 'xcshareddata', 'WorkspaceSettings.xcsettings');
+    expectExists(xcodeWorkspaceSettingsPath, false);
 
     final String versionPath = fs.path.join('.metadata');
     expectExists(versionPath);
diff --git a/packages/flutter_tools/test/ios/mac_test.dart b/packages/flutter_tools/test/ios/mac_test.dart
index ba50d7e..8124ed8 100644
--- a/packages/flutter_tools/test/ios/mac_test.dart
+++ b/packages/flutter_tools/test/ios/mac_test.dart
@@ -5,7 +5,6 @@
 import 'dart:async';
 
 import 'package:file/file.dart';
-import 'package:file/memory.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/base/io.dart' show ProcessException, ProcessResult;
 import 'package:flutter_tools/src/ios/mac.dart';
@@ -29,73 +28,6 @@
 class MockIosProject extends Mock implements IosProject {}
 
 void main() {
-  group('PropertyList', () {
-    MockProcessManager mockProcessManager;
-    MemoryFileSystem fs;
-    Directory workspaceDirectory;
-    File workspaceSettingsFile;
-
-    setUp(() {
-      mockProcessManager = MockProcessManager();
-      fs = MemoryFileSystem();
-      workspaceDirectory = fs.directory('Runner.xcworkspace');
-      workspaceSettingsFile = workspaceDirectory.childDirectory('xcshareddata').childFile('WorkspaceSettings.xcsettings');
-    });
-
-    testUsingContext('does nothing if workspace directory does not exist', () async {
-      await setXcodeWorkspaceBuildSystem(workspaceDirectory: workspaceDirectory, workspaceSettings: workspaceSettingsFile, modern: false);
-      verifyNever(mockProcessManager.run(<String>[PlistBuddy.path, '-c', 'Print BuildSystemType', workspaceSettingsFile.path]));
-    }, overrides: <Type, Generator>{
-      FileSystem: () => fs,
-      ProcessManager: () => mockProcessManager,
-    });
-
-    testUsingContext('creates dict-based plist if settings file does not exist', () async {
-      workspaceSettingsFile.parent.createSync(recursive: true);
-      when(mockProcessManager.run(<String>[PlistBuddy.path, '-c', 'Print BuildSystemType', workspaceSettingsFile.path]))
-        .thenAnswer((_) => Future<ProcessResult>.value(ProcessResult(1, 1, '', '')));
-      await setXcodeWorkspaceBuildSystem(workspaceDirectory: workspaceDirectory, workspaceSettings: workspaceSettingsFile, modern: false);
-      verify(mockProcessManager.run(<String>[PlistBuddy.path, '-c', 'Clear dict', workspaceSettingsFile.path]));
-      verify(mockProcessManager.run(<String>[PlistBuddy.path, '-c', 'Add BuildSystemType string Original', workspaceSettingsFile.path]));
-    }, overrides: <Type, Generator>{
-      FileSystem: () => fs,
-      ProcessManager: () => mockProcessManager,
-    });
-
-    testUsingContext('writes legacy build mode settings if requested and not present', () async {
-      workspaceSettingsFile.createSync(recursive: true);
-      when(mockProcessManager.run(<String>[PlistBuddy.path, '-c', 'Print BuildSystemType', workspaceSettingsFile.path]))
-        .thenAnswer((_) => Future<ProcessResult>.value(ProcessResult(1, 1, '', '')));
-      await setXcodeWorkspaceBuildSystem(workspaceDirectory: workspaceDirectory, workspaceSettings: workspaceSettingsFile, modern: false);
-      verify(mockProcessManager.run(<String>[PlistBuddy.path, '-c', 'Add BuildSystemType string Original', workspaceSettingsFile.path]));
-    }, overrides: <Type, Generator>{
-      FileSystem: () => fs,
-      ProcessManager: () => mockProcessManager,
-    });
-
-    testUsingContext('updates legacy build mode setting if requested and existing setting is present', () async {
-      workspaceSettingsFile.createSync(recursive: true);
-      when(mockProcessManager.run(<String>[PlistBuddy.path, '-c', 'Print BuildSystemType', workspaceSettingsFile.path]))
-        .thenAnswer((_) => Future<ProcessResult>.value(ProcessResult(1, 0, 'FancyNewOne', '')));
-      await setXcodeWorkspaceBuildSystem(workspaceDirectory: workspaceDirectory, workspaceSettings: workspaceSettingsFile, modern: false);
-      verify(mockProcessManager.run(<String>[PlistBuddy.path, '-c', 'Set BuildSystemType Original', workspaceSettingsFile.path]));
-    }, overrides: <Type, Generator>{
-      FileSystem: () => fs,
-      ProcessManager: () => mockProcessManager,
-    });
-
-    testUsingContext('deletes legacy build mode setting if modern build mode requested', () async {
-      workspaceSettingsFile.createSync(recursive: true);
-      when(mockProcessManager.run(<String>[PlistBuddy.path, '-c', 'Print BuildSystemType', workspaceSettingsFile.path]))
-        .thenAnswer((_) => Future<ProcessResult>.value(ProcessResult(1, 0, 'Original', '')));
-      await setXcodeWorkspaceBuildSystem(workspaceDirectory: workspaceDirectory, workspaceSettings: workspaceSettingsFile, modern: true);
-      verify(mockProcessManager.run(<String>[PlistBuddy.path, '-c', 'Delete BuildSystemType', workspaceSettingsFile.path]));
-    }, overrides: <Type, Generator>{
-      FileSystem: () => fs,
-      ProcessManager: () => mockProcessManager,
-    });
-  });
-
   group('IMobileDevice', () {
     final FakePlatform osx = FakePlatform.fromPlatform(const LocalPlatform())
       ..operatingSystem = 'macos';
diff --git a/packages/flutter_tools/test/macos/cocoapods_test.dart b/packages/flutter_tools/test/macos/cocoapods_test.dart
index 82b8aa9..bc2afa6 100644
--- a/packages/flutter_tools/test/macos/cocoapods_test.dart
+++ b/packages/flutter_tools/test/macos/cocoapods_test.dart
@@ -60,7 +60,7 @@
     projectUnderTest = FlutterProject.fromDirectory(fs.directory('project'));
     projectUnderTest.ios.xcodeProject.createSync(recursive: true);
     cocoaPodsUnderTest = CocoaPods();
-    pretendPodVersionIs('1.5.0');
+    pretendPodVersionIs('1.6.0');
     fs.file(fs.path.join(
       Cache.flutterRoot, 'packages', 'flutter_tools', 'templates', 'cocoapods', 'Podfile-ios-objc',
     ))
@@ -123,28 +123,21 @@
     });
 
     testUsingContext('detects below minimum version', () async {
-      pretendPodVersionIs('0.39.8');
+      pretendPodVersionIs('1.5.0');
       expect(await cocoaPodsUnderTest.evaluateCocoaPodsInstallation, CocoaPodsStatus.belowMinimumVersion);
     }, overrides: <Type, Generator>{
       ProcessManager: () => mockProcessManager,
     });
 
-    testUsingContext('detects below recommended version', () async {
-      pretendPodVersionIs('1.4.99');
-      expect(await cocoaPodsUnderTest.evaluateCocoaPodsInstallation, CocoaPodsStatus.belowRecommendedVersion);
-    }, overrides: <Type, Generator>{
-      ProcessManager: () => mockProcessManager,
-    });
-
     testUsingContext('detects at recommended version', () async {
-      pretendPodVersionIs('1.5.0');
+      pretendPodVersionIs('1.6.0');
       expect(await cocoaPodsUnderTest.evaluateCocoaPodsInstallation, CocoaPodsStatus.recommended);
     }, overrides: <Type, Generator>{
       ProcessManager: () => mockProcessManager,
     });
 
     testUsingContext('detects above recommended version', () async {
-      pretendPodVersionIs('1.5.1');
+      pretendPodVersionIs('1.6.1');
       expect(await cocoaPodsUnderTest.evaluateCocoaPodsInstallation, CocoaPodsStatus.recommended);
     }, overrides: <Type, Generator>{
       ProcessManager: () => mockProcessManager,