[google_maps_flutter] Skip impl copy of iOS tests (flutter#8975)

Skips the implementation package copy of the tests that have already been skipped in the app-facing package, as they are hanging the same way. This was masked by the hangs in the app-facing package, as they ran first in all-package test runs.

Part of flutter#166139

Author: stuartmorgan-g

packages/google_maps_flutter/google_maps_flutter_ios/example/ios14/integration_test/google_maps_test.dart

@@ -1642,6 +1642,8 @@ void main() {
       await tester.pumpAndSettle();
     },
     variant: _cameraUpdateTypeVariants,
+    // Hanging in CI, https://github.com/flutter/flutter/issues/166139
+    skip: true,
   );
 
   /// Tests animating the camera with specified durations to verify timing
@@ -1786,6 +1788,8 @@ void main() {
       await tester.pumpAndSettle();
     },
     variant: _cameraUpdateTypeVariants,
+    // Hanging in CI, https://github.com/flutter/flutter/issues/166139
+    skip: true,
   );
 }