Changing the flag currently requires a reboot, because it is read once when the process starts and never changes.
This change triggers a re-read of the flag value from SystemProperties whenever Taskbar is recreated.
This allows setting the flag as part of integration tests for bubble bar.
Bug: 273994695
Test: Manual:
- turn flag off
- create bubbles
- observe floating bubbles are added
- turn flag on
- change navigation mode to gesture navigation
- observe bubble bar becomes visible
Change-Id: I277ea6aa2c8d3ab04094537bf4cd31630310dfec
Liran Binyamin
e41e6185e4