use 4k res on windows tests

azure-pipelines-integrationtests.yml

@@ -29,7 +29,7 @@ jobs:
   - task: Windows Application Driver@0
     inputs:
       OperationType: 'Start'
-      AgentResolution: '1080p'
+      AgentResolution: '4K'
     displayName: 'Start WinAppDriver'
   
   - task: DotNetCoreCLI@2