TIF: Start user after user provision is done

Instead of starting user upon receiving ACTION_USER_STARTED intent,
start user after ACTION_USER_INFO_CHANGED intent is also received on the
same user. This change is made because LX would broadcast
ACTION_USER_STARTED to start empty profile in the background, which
could cause external inputs managed by TvInputManagerService to unbind
unexpectedly.

Bug: b/384619332, b/384416907, b/396594190, b/337751144
Test: manual on u branch
FLag: EXEMPT bugfix only
Change-Id: Ib7c10211c3a268318b25914d72722a83bef561fd