[BUG] Local notifications repeating weekly

[roberlander2]

Describe the bug
Local notifications that are intended to be scheduled one time only are repeating weekly.

To Reproduce
Steps to reproduce the behavior:

1. Take the Health Screener using the Illinois app
2. Submit a symptom that schedules a reminder to rescreen (e.g., Sore Throat)
3. Wait at least one week
4. See that multiple rescreen reminders are sent
5. Also described here: rokwire/illinois-app#3597

Expected behavior
Local notifications should only be scheduled to fire once as intended. Periodic local notifications have yet to be fully implemented.