Revert "Merge remote-tracking branch 'upstream/master' into bubble-tea"

This reverts commit 2305c9f8924bbb162600d97da36d2c047ee61210, reversing
changes made to 20954fbbe8e6b3761d9e55caf485220399fbf202.
Bug 979750 - [System2] "attention_screen" and "media_recording" missing "Applications"
Merge pull request #16892 from mpizza/Bug_979750

Bug 979750 - [System2] "attention_screen" and "media_recording" miss "Applications".
Bug 937442 - (lockscreen-window) [Window Management] Implement LockscreenWindow to manage LockScreen