CPP-8171 File Cache Conflict and 'AWT events are not allowed inside write action' exception while trying to create new project in place of already existing

– fixing apparently broken test

platform/platform-api/src/com/intellij/openapi/ui/TestDialog.java

@@ -28,6 +28,11 @@ public interface TestDialog {
       return 0;
     }
   };
+  TestDialog NO = new TestDialog() {
+    public int show(String message) {
+      return Messages.NO;
+    }
+  };
 
   int show(String message);
 }