Have QS fragment keep track of some state on recreate

Test: runtest systemui
Change-Id: I1cf84a0943092fcfc5428fcfccb4a887a83b294b
Fixes: 35205198
Fixes: 36592148
(cherry picked from commit 78187249c3e8aaf89a380816e123a3a4653d5b4e)
3 files changed