Move GONE transition listener to application scope

With compose QS, only listening while attached would miss updates when
the carousel was hidden on lockscreen, resulting in never un-hiding it
after leaving the lockscreen

Fixes: 417234247
Test: manual - check behavior with media allowed/not on lockscreen
Test: atest MediaCarouselControllerTest
Flag: EXEMPT bugfix
Change-Id: If664bed5d03e88a3ce9fcf42b06099e7faf3534c