[Super Editor][Web] - Export stub test extension file. (Resolves #2895) (#2896)

Author: angelosilvestre

super_editor/lib/src/test/flutter_extensions/flutter_extensions_stub.dart

@@ -0,0 +1,4 @@
+// The purpose of this file is to act as a stub for web builds where
+// we don't want to expose test-related extensions.
+//
+// See https://github.com/Flutter-Bounty-Hunters/super_editor/issues/2895 for details.

super_editor/lib/super_test.dart

@@ -1,5 +1,10 @@
-export 'src/test/flutter_extensions/finders.dart';
-export 'src/test/flutter_extensions/test_documents.dart';
-export 'src/test/flutter_extensions/test_flutter_extensions.dart';
-export 'src/test/flutter_extensions/test_tools_goldens.dart';
-export 'src/test/flutter_extensions/test_tools_user_input.dart';
+export 'src/test/flutter_extensions/finders.dart'
+    if (dart.library.js_interop) 'src/test/extensions/flutter_extensions_stub.dart';
+export 'src/test/flutter_extensions/test_documents.dart'
+    if (dart.library.js_interop) 'src/test/extensions/flutter_extensions_stub.dart';
+export 'src/test/flutter_extensions/test_flutter_extensions.dart'
+    if (dart.library.js_interop) 'src/test/extensions/flutter_extensions_stub.dart';
+export 'src/test/flutter_extensions/test_tools_goldens.dart'
+    if (dart.library.js_interop) 'src/test/extensions/flutter_extensions_stub.dart';
+export 'src/test/flutter_extensions/test_tools_user_input.dart'
+    if (dart.library.js_interop) 'src/test/extensions/flutter_extensions_stub.dart';

super_editor/lib/super_text_field.dart

@@ -8,5 +8,3 @@ export 'src/super_textfield/infrastructure/text_field_tap_handlers.dart';
 
 // Tools for building new text fields.
 export 'src/super_textfield/infrastructure/text_field_border.dart';
-
-export 'src/test/flutter_extensions/test_tools_goldens.dart';

super_editor/test_goldens/super_textfield/super_textfield_android_overlay_controls_test.dart

@@ -1,6 +1,7 @@
 import 'package:attributed_text/attributed_text.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:super_editor/super_test.dart';
 import 'package:super_editor/super_text_field.dart';
 import 'package:super_editor/super_text_field_test.dart';
 

super_editor/test_goldens/super_textfield/super_textfield_empty_test.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:golden_toolkit/golden_toolkit.dart';
+import 'package:super_editor/super_test.dart';
 import 'package:super_editor/super_text_field.dart';
 
 void main() {