Merge "Revert "Check AR state upon enter PiP collect"" into main

                }

                getTransitionController().startCollectOrQueue(enterPipTransition, (deferred) -> {

                    if (deferred && !r.checkEnterPictureInPictureState(

                            "enterPictureInPictureMode-collect", false /* beforeStopping */)) {

                        // If the transition was queued to collect, it is possible the PiP candidate

                        // activity isn't in a proper state to enter PiP anymore, so double check.

                        Slog.w(TAG, "PiP candidate activity in invalid state on transit collect");

                        enterPipTransition.abort();

                        return;

                    }

                    mChainTracker.start("enterPip2", enterPipTransition);

                    // Collecting PiP activity explicitly to avoid stopping PiP activity while

                    // Shell handles the request; see task supervisor's