Disable flaky text_editing_integration tests temporarily. (#145629)

I did some local debugging but couldn't get an exact root cause on the flakiness of these tests. Running them locally, there are a lot of assertions and exceptions being thrown in console, so I think we need to figure out what's going on there, but we should disable these for now to unblock the tree.

dev/bots/test.dart

@@ -1265,9 +1265,11 @@ Future<void> _runWebLongRunningTests() async {
     () => _runWebE2eTest('scroll_wheel_integration', buildMode: 'debug', renderer: 'html'),
 
     // This test doesn't do anything interesting w.r.t. rendering, so we don't run the full build mode x renderer matrix.
-    () => _runWebE2eTest('text_editing_integration', buildMode: 'debug', renderer: 'canvaskit'),
-    () => _runWebE2eTest('text_editing_integration', buildMode: 'profile', renderer: 'html'),
-    () => _runWebE2eTest('text_editing_integration', buildMode: 'release', renderer: 'html'),
+    // These tests have been extremely flaky, so we are temporarily disabling them until we figure out how to make them more robust.
+    // See https://github.com/flutter/flutter/issues/143834
+    // () => _runWebE2eTest('text_editing_integration', buildMode: 'debug', renderer: 'canvaskit'),
+    // () => _runWebE2eTest('text_editing_integration', buildMode: 'profile', renderer: 'html'),
+    // () => _runWebE2eTest('text_editing_integration', buildMode: 'release', renderer: 'html'),
 
     // This test doesn't do anything interesting w.r.t. rendering, so we don't run the full build mode x renderer matrix.
     () => _runWebE2eTest('url_strategy_integration', buildMode: 'debug', renderer: 'html'),