Change the trigger for scrolling to first page

Instead of doing it when going from listening to not listening, do it in
the opposite transition. This will make sure that:

* When opening QS, it will be in the first page
* It won't go to first page in the middle of an out transition

Test: manual, open edit mode in second page
Bug: 401028991
Flag: com.android.systemui.qs_ui_refactor_compose_fragment
Flag: com.android.systemui.always_compose_qs_ui_fragment
Change-Id: I5f75c8bb3a8bc4c29fbd48d1e9ae41acb41e503c