Temporarily change canvaskit kitchensink test to unblock the skia roll (#50617)

The previous skia roll (https://github.com/flutter/engine/pull/50609) failed on [Linux linux_web_engine](https://ci.chromium.org/b/8756177705618610401).
I've tested that the failing `canvaskit_api_tt_on_test.dart` would pass with the new skia revision `'a1c58c4eb6d5ae553097c5d27c134e09c8825e06` on this patch.

[C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style
diff --git a/lib/web_ui/test/canvaskit/canvaskit_api_test.dart b/lib/web_ui/test/canvaskit/canvaskit_api_test.dart
index 514ad95..6a1fea0 100644
--- a/lib/web_ui/test/canvaskit/canvaskit_api_test.dart
+++ b/lib/web_ui/test/canvaskit/canvaskit_api_test.dart
@@ -1596,7 +1596,7 @@
         ..weight = canvasKit.FontWeight.Bold)
       ..fontSize = 72
       ..heightMultiplier = 1.5
-      ..halfLeading = true
+      ..halfLeading = false
       ..leading = 0
       ..strutEnabled = true
       ..forceStrutHeight = false;