PIP: Partial fix to wrong insets during bounds animation

Partially fixes an issue where the bounds animation when
expanding / collapsing the PIP menu would case the insets
to get wrongly applied.

The same thing still happens when animating from collapsed
to fullscreen, which requires a larger fix.

Bug: 77802617
Test: Enable cutout, enter PIP, tap on PIP window, verify transition is not jumpy.
Change-Id: I3edb4f8dec10ed85963853fa7e69812dfb198273