Request dismissing keyguard when showing MediaProjection Dialog

If the MediaProjection Dialog is about to show on top of keyguard,
instead requets the user to unlock their device first.

Bug: 351409536
Test: manual + presubmit
Flag: com.android.systemui.media_projection_dialog_behind_lockscreen
Change-Id: I45867660f88a2a59c16b95126d776ad8d3d88b35
2 files changed