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

libs/WindowManager/Shell/src/com/android/wm/shell/pip/tv/TvPipBoundsState.java

@@ -87,6 +87,7 @@ public class TvPipBoundsState extends PipBoundsState {
     public void resetTvPipState() {
         mTvFixedPipOrientation = ORIENTATION_UNDETERMINED;
         mTvPipGravity = DEFAULT_TV_GRAVITY;
+        mTvPipManuallyCollapsed = false;
     }
 
     /** Set the tv expanded bounds of PiP */