Hide QS customizer correctly

When users open and close QS customizer quickly, QSCustomizer#hide()
is not called because QSCustomizer#isCustomizing() returns false.
The isCustomizing() becomes true when the expand animation ends.
The hide() should be called even though the animation is ongoing.

Bug: 30545089
Test: manual - open and close QS customizer quickly

Change-Id: Ic483addfb6ae9da31c997fec7778e5acd718c353
2 files changed