Marks Windows_android channels_integration_test_win to be unflaky (#106812)

Author: fluttergithubbot

.ci.yaml

@@ -4245,7 +4245,6 @@ targets:
     scheduler: luci
 
   - name: Windows_android channels_integration_test_win
-    bringup: true # Flaky https://github.com/flutter/flutter/issues/106030
     recipe: devicelab/devicelab_drone
     presubmit: false
     timeout: 60