Add chevron to tiles that expand instead of toggling.

Logic for side view:
* If the tile has a sideViewCustomDrawable, show that regardless of
State
* Else, if the tile is not Boolean or the state has forceExpandView, it
shows a chevron.
* Else, show nothing.

Test: atest com.android.systemui.qs
Test: manual
Fixes: 187057842
Change-Id: Ib9407914f4fbe5ac833b06008fc405435d0c45b0