Reset collapsed TV PiP state for next PiP

Collapsed state should not be saved between PiPs - position is
already being reset.

Bug: 245924165
Test: manual - start expanded PiP, collapse from menu, close, open new
expanded PiP -> PiP should be expanded

Change-Id: I8e5c111acabfcc5ccd7939fd0f053e4cdb180475