Try and run PreTestSetup for TAEF CI succes

Author: michael-hawker

UITests/UITests.Tests.Shared/UITestBase.cs

@@ -87,6 +87,8 @@ public static TestSetupHelper.TestSetupHelperOptions TestSetupHelperOptions
         [TestInitialize]
         public async Task TestInitialize()
         {
+            PreTestSetup();
+
 #if USING_TAEF
             var fullTestName = TestContext.TestName;
             var lastDotIndex = fullTestName.LastIndexOf('.');
@@ -207,5 +209,16 @@ private void CommunicationService_RequestReceived(AppServiceConnection sender, A
                 messageDeferral.Complete();
             }
         }
+
+        // This will reset the test for each run (as from original WinUI https://github.com/microsoft/microsoft-ui-xaml/blob/master/test/testinfra/MUXTestInfra/Infra/TestHelpers.cs)
+        // We construct it so it doesn't try to run any tests since we use the AppService Bridge to complete
+        // our loading.
+        private void PreTestSetup()
+        {
+            _ = new TestSetupHelper(new string[] { }, new TestSetupHelper.TestSetupHelperOptions()
+            {
+                AutomationIdOfSafeItemToClick = null
+            });
+        }
     }
 }