Ensure that we wait for transition to finish before getting PiP bounds.

Bug: 68953892
Test: android.server.am.ActivityManagerPinnedStackTests
Test: #testDisplayMetricsPinUnpin
Test: #testPinnedStackOutOfBoundsInsetsNonNegative

Change-Id: I9dfb352156197ed8973a59d8d0480ee5a39fc26b
1 file changed