Hide PiP menu upon display change

Hide the PiP menu upon any display change to eliminate the chance that
PiP menu bounds mismatches with the window.

This change applies to both pip1 and pip2

Flag: EXEMPT bugfix
Video: http://recall/-/aaaaaabFQoRHlzixHdtY/g0DgR8nravwAFMLJAkEBRm
Bug: 382001243
Test: Unfold the device while PiP menu is present, see video
Change-Id: I9d8ff41a30870bcd51bb7543ef74045955166f2c