Skip flaky flutter_immediately_exit test (#74055)

packages/flutter_tools/test/integration.shard/flutter_immediately_exit_test.dart

@@ -10,6 +10,7 @@ import 'test_driver.dart';
 import 'test_utils.dart';
 
 void main() {
+  group('immediate exit', () {
     Directory tempDir;
     final ProjectWithImmediateExit _project = ProjectWithImmediateExit();
     FlutterRunTestDriver _flutter;
@@ -24,7 +25,6 @@ void main() {
       tryToDelete(tempDir);
     });
 
-
     testWithoutContext('flutter_tools gracefully handles quick app shutdown', () async {
       try {
         await _flutter.run();
@@ -40,4 +40,6 @@ void main() {
         );
       }
     });
+  }, skip: platform.isWindows, // Flaky on Windows: https://github.com/flutter/flutter/issues/74052
+  );
 }