[google_maps_flutter_android] Fix for testToggleInfoWindow persistently flaky (#4768)

Fixes issue: flutter/flutter#131783

Author: mossmana

packages/google_maps_flutter/google_maps_flutter_android/example/integration_test/google_maps_tests.dart

@@ -936,6 +936,14 @@ void googleMapsTests() {
     final ExampleGoogleMapController controller =
         await controllerCompleter.future;
 
+    await tester.pumpAndSettle();
+
+    // TODO(mossmana): Adding this delay addresses
+    // https://github.com/flutter/flutter/issues/131783. It may be related
+    // to https://github.com/flutter/flutter/issues/54758 and should be
+    // re-evaluated when that issue is fixed.
+    await Future<void>.delayed(const Duration(seconds: 1));
+
     bool iwVisibleStatus =
         await controller.isMarkerInfoWindowShown(marker.markerId);
     expect(iwVisibleStatus, false);
@@ -953,9 +961,7 @@ void googleMapsTests() {
     await controller.hideMarkerInfoWindow(marker.markerId);
     iwVisibleStatus = await controller.isMarkerInfoWindowShown(marker.markerId);
     expect(iwVisibleStatus, false);
-  },
-      // TODO(camsim99): Fix https://github.com/flutter/flutter/issues/131783.
-      skip: true);
+  });
 
   testWidgets('fromAssetImage', (WidgetTester tester) async {
     const double pixelRatio = 2;