Run IOS unit tests on LUCI (#19141)

* change the version of simulator. luci bots only has 13.0

* skip failing pointer binding tests

* skip path_metrics (canvaskit) and a method from surface_test

* fix analyzer errors

* remove extra added touch event context test

* removing left overs for screenshot debugging

* apply reviewers suggestion for skipping tests

lib/web_ui/dev/browser_lock.yaml

@@ -12,7 +12,7 @@ edge:
   launcher_version: '1.2.0.0'
 ios-safari:
   majorVersion: 13
-  minorVersion: 5
+  minorVersion: 0
   device: 'iPhone 11'
 ## geckodriver is used for testing Firefox Browser. It works with multiple
 ## Firefox Browser versions.

lib/web_ui/test/canvaskit/path_metrics_test.dart

@@ -9,6 +9,7 @@ import 'package:ui/src/engine.dart';
 import 'package:ui/ui.dart' as ui;
 
 void main() {
+  group('Path Metrics', () {
     setUpAll(() async {
       await ui.webOnlyInitializePlatform();
     });
@@ -64,4 +65,9 @@ void main() {
       expect(iter1.current, isNull);
       expect(iter2.current, isNull);
     });
+  },
+      // This test failed on iOS Safari.
+      // TODO: https://github.com/flutter/flutter/issues/60040
+      skip: (browserEngine == BrowserEngine.webkit &&
+          operatingSystem == OperatingSystem.iOs));
 }

lib/web_ui/test/engine/surface/surface_test.dart

@@ -194,7 +194,11 @@ void main() {
 
       expect(elementC.parent, elementA);
       expect(elementB.parent, null);
-    });
+    },
+        // This method failed on iOS Safari.
+        // TODO: https://github.com/flutter/flutter/issues/60036
+        skip: (browserEngine == BrowserEngine.webkit &&
+            operatingSystem == OperatingSystem.iOs));
 
     test('is retained', () {
       final SceneBuilder builder1 = SceneBuilder();