Add input sanitation for bus button emoji choice (#303)
Add input sanitation for bus button emoji choice (#303)

Co-authored-by: Sean H <66da2057bbd3518d48e963e320cb45979807b8d1@users.noreply.github.com>
wtg/shuttletracker,wtg/shuttletracker,wtg/shuttle_tracking_2,wtg/shuttle_tracking_2,wtg/shuttle_tracking_2,wtg/shuttletracker,wtg/shuttle_tracking_2,wtg/shuttletracker,wtg/shuttletracker,wtg/shuttle_tracking_2,wtg/shuttletracker,wtg/shuttle_tracking_2