Fix flaky WindowTokenClientControllerTest

Create a new instance for testing instead of using the app's real
instance.

The failure only happens once and likely to be an isolated one. Likely to be a side effect of using the application's real instance.

Fix: 293161156
Test: atest FrameworksCoreTests:WindowTokenClientControllerTest
Change-Id: I77f0e34066c61f1f5aaf95551e6d58cf96d112b4
2 files changed