Fix PIP exit animation flickering on non-match parent activity

It was regressed by [1], which assumes the visible frame are always from
(0, 0).

[1]: I13006f479868f731550b9c75d8f9927bda2592fe

Bug: 356277166
Change-Id: Ibbd3da612ac7906702f1500b065c6a02c188003c
Fixes: 379653269 
Test: atest BottomHalfExitPipToAppViaIntentTest BottomHalfExitPipToAppViaExpandButtonTest
Test: atest PipTaskOrganizerTest DesktopTasksLimiterTest DesktopRepositoryTest
Flag: EXEMPT bugfix