Ignore exclusion region changes for app handle

These are not needed and are causing jank

Bug: 383672263
Test: Reduced app missed frames http://shortn/_phPzGecJ02
Flag: com.android.window.flags.app_handle_no_relayout_on_exclusion_change
Change-Id: I5e55fe4abd6f95bf421d660db37eafa4353108da