Merge "Prevents duplicated finishing activities" into main

        // The task order may be changed by finishIfPossible() for adjusting focus if there are

        // nested tasks, so add all activities into a list to avoid missed removals.

        final ArrayList<ActivityRecord> removingActivities = new ArrayList<>();

        forAllActivities((Consumer<ActivityRecord>) removingActivities::add);

        forAllActivities((r) -> {

            if (!r.finishing) {

                removingActivities.add(r);

            }

        });

        for (int i = removingActivities.size() - 1; i >= 0; --i) {

            final ActivityRecord r = removingActivities.get(i);

            if (withTransition && r.isVisible()) {