Fave status lost when leaving ObsDetails

[kueda]

Describe the bug
When you fave an obs, the vote gets submitted but the star isn't filled in when you go back to ObsDetails

To Reproduce
Steps to reproduce the behavior:

1. Sign in
2. Go to ObsDetails for one of your existing observations
3. Tap the star button to fave it. It should change from an outline to a fill
4. Tap back to return to MyObs
5. Tap on the same obs again to enter ObsDetails
6. The star button is in outline mode again

Expected behavior
When you return to ObsDetails, the star button should remain filled b/c you faved it.

Context (please complete the following information):

• Device: iPhone SE (3rd gen)
• OS: 17.5.1
• App version: 0.37.0 (103)

Additional context
FWIW, the fave does seem to get submitted to the website. Not sure why we're not pulling in the web state of the obs when you return to ObsDetail.

If you force quit the app and restart, then go back to ObsDetail, the fave button is filled in.