[web] skip flaky overflow_clipbehavior_none.cupertino.0.png golden check (#138498)

Skipping the test due to
https://github.com/flutter/flutter/issues/137669. It's not clear which
PR started it, so we can't revert anything, and the fix is not yet clear
either. However, the flakiness is very high and is disruptive to the
Flutter team.

packages/flutter/test/cupertino/text_field_test.dart

@@ -8411,10 +8411,13 @@ void main() {
     final EditableText editableText = tester.firstWidget(find.byType(EditableText));
     expect(editableText.clipBehavior, Clip.none);
 
-    await expectLater(
-      find.byKey(const ValueKey<int>(1)),
-      matchesGoldenFile('overflow_clipbehavior_none.cupertino.0.png'),
-    );
+    // TODO(harryterkelsen): see https://github.com/flutter/flutter/issues/137669
+    if (!kIsWeb || !isCanvasKit) {
+      await expectLater(
+        find.byKey(const ValueKey<int>(1)),
+        matchesGoldenFile('overflow_clipbehavior_none.cupertino.0.png'),
+      );
+    }
   });
 
   testWidgetsWithLeakTracking('can shift + tap to select with a keyboard (Apple platforms)', (WidgetTester tester) async {