stop the stopwatch if we are no longer advancing the animations, so they do not jump to an unintended timepoint when restarted
stop the stopwatch if we are no longer advancing the animations, so they do not jump to an unintended timepoint when restarted

rive-app/rive-flutter,rive-app/rive-flutter,rive-app/rive-flutter,rive-app/rive-flutter,rive-app/rive-flutter,rive-app/rive-flutter,rive-app/rive-flutter,rive-app/rive-flutter