Cannot read properties of undefined (reading 'thumbnailUrl') when deleting remote obs

[tomsaleeba]

Tested on commit 76321e3

Steps:

• launch app
• open detailed view for a remote obs
• delete the obs

Expected:

• user is returned to the obs list
• deleted obs is no longer visible
• no errors in the JS console

Actual:

• we're returned to the obs list ✔️
• two errors are shown in the JS console (see screenshot)
• an empty obs item is shown in the list (see screenshot)

Notes:
After the status check to the facade is done and the local record is deleted, the empty obs item is gone and the UI is correct. The bug only exists while the delete is pending.