Revert "Suppress app transition while recents is running"

This reverts commit c34693dcac1fd5b8298b296956f258ec41e9d9a8.

Reason for revert: Causing PiP to fail b/231669960
Bug: 231669960
Change-Id: Ib16cf999071fd06bd9a574859f8fb18d6fede3fa
5 files changed