flutter_tools: Prefer using .of() over .from() when possible (#55250)

Prefer using `.of()` (which is statically type-checked) over
`.from()` (which is dynamically type-checked) when possible.

packages/flutter_tools/lib/src/project.dart

diff --git a/packages/flutter_tools/lib/src/project.dart b/packages/flutter_tools/lib/src/project.dart
index c6fd752..7ec69d0 100644
--- a/packages/flutter_tools/lib/src/project.dart
+++ b/packages/flutter_tools/lib/src/project.dart
@@ -108,7 +108,7 @@
       example.android.applicationId,
       await example.ios.productBundleIdentifier,
     ];
-    return Set<String>.from(candidates
+    return Set<String>.of(candidates
         .map<String>(_organizationNameFromPackageName)
         .where((String name) => name != null));
   }