Respect the --no-codesign flag even for simulators (#6799)

packages/flutter_tools/lib/src/ios/mac.dart

diff --git a/packages/flutter_tools/lib/src/ios/mac.dart b/packages/flutter_tools/lib/src/ios/mac.dart
index f217e12..da726d5 100644
--- a/packages/flutter_tools/lib/src/ios/mac.dart
+++ b/packages/flutter_tools/lib/src/ios/mac.dart
@@ -141,19 +141,20 @@
 
   if (buildForDevice) {
     commands.addAll(<String>['-sdk', 'iphoneos', '-arch', 'arm64']);
-    if (!codesign) {
-      commands.addAll(
-        <String>[
-          'CODE_SIGNING_ALLOWED=NO',
-          'CODE_SIGNING_REQUIRED=NO',
-          'CODE_SIGNING_IDENTITY=""'
-        ]
-      );
-    }
   } else {
     commands.addAll(<String>['-sdk', 'iphonesimulator', '-arch', 'x86_64']);
   }
 
+  if (!codesign) {
+    commands.addAll(
+      <String>[
+        'CODE_SIGNING_ALLOWED=NO',
+        'CODE_SIGNING_REQUIRED=NO',
+        'CODE_SIGNING_IDENTITY=""'
+      ]
+    );
+  }
+
   RunResult result = await runAsync(
     commands,
     workingDirectory: app.appDirectory,