Enforce setCurrentState calls are on main thread

These calls need to be done in main thread. Now that it's enforced by
LifecycleRegistry, it should also be enforced here.

Fixes: 162923566
Test: manual
Change-Id: I569123ca240bec24f805ab87dfab25daf3545844
Merged-In: I569123ca240bec24f805ab87dfab25daf3545844
(cherry picked from commit 033a5ef99c55baec6b370d61823cbc52bdc9fa16)
1 file changed