Add a sysui state for manage menu being expanded

This is needed to properly scrim taskbar when bubbles
are expanded with the manage menu open.

Added tests around hiding / showing the menu and
verifying the state.

Bug: 197139718
Test: BubblesTest NewNotifPipelineBubblesTest
Change-Id: I52e41344f9273398cea606c227dfcf3b8cc6394d