Merge "Distinguish exited pip task change" into main

        // Entering PIP.

        if (isEnteringPip(info)) {

            if (!mPipTransitionState.isInPip() && TransitionUtil.hasDisplayChange(info)) {

                final TransitionInfo.Change pipChange = getPipChange(info);

                if (pipChange != null) {

                    // Clear old crop.

                    updatePipForUnhandledTransition(pipChange, startTransaction, finishTransaction);

                }

                ProtoLog.d(ShellProtoLogGroup.WM_SHELL_PICTURE_IN_PICTURE,

                        "%s: ignore exited PiP with display change", TAG);

                // This should be an exited pip. E.g. a display change transition happens when

                // the exiting pip is animating, then mergeAnimation -> end -> onFinishResize ->

                // onExitPipFinished was called, i.e. pip state is UNDEFINED. So do not handle

                // the incoming transition as entering pip.

                return false;

            }

            if (handleEnteringPipWithDisplayChange(transition, info, startTransaction,

                    finishTransaction, finishCallback)) {

                // The destination position is applied directly and let default transition handler