Skip a hot_reload_web_test on Windows

For https://github.com/flutter/flutter/issues/85043
diff --git a/packages/flutter_tools/test/web.shard/hot_reload_web_test.dart b/packages/flutter_tools/test/web.shard/hot_reload_web_test.dart
index eb4a47b..0b6b791 100644
--- a/packages/flutter_tools/test/web.shard/hot_reload_web_test.dart
+++ b/packages/flutter_tools/test/web.shard/hot_reload_web_test.dart
@@ -70,5 +70,5 @@
     } finally {
       await subscription.cancel();
     }
-  });
+  }, skip: Platform.isWindows);
 }