Thanks for plogging alert persists on multiple screens

**Describe the bug**
After plogging an alert is displayed that says 'Thanks for plogging' and this message persists

**To Reproduce**
Steps to reproduce the behavior:
1. Go to the plogalong app
2. Submit a plog
3. Message is displayed
4. Navigate to another page and message will persist

**Expected behavior**
It is expected that the message will dismiss after a timed interval or when a user navigates to a new page.

**Screenshots**
If applicable, add screenshots to help explain your problem.
https://appstoreconnect.apple.com/apps/1497818996/testflight/screenshots/AMmceAtOiGd8nQbq07qULF4?preReleaseVersionId=d336bf1f-7e38-4b58-a5ef-b0d3b825f8ea&sort=-timestamp