Prevent UI updates when there is an unresolved recording in progress

[myieye]

Fixes #1762

Description

See #1762

Checklist

• I have labeled my PR with: bug, feature, engineering, security fix or testing
• I have performed a self-review of my own code
• I have reviewed the title & description of this PR which I will use as the squashed PR commit message
• I have commented my code, particularly in hard-to-understand areas
• I have enabled auto-merge (optional)

Testing

Testers, use the following instructions against our staging environment. Post your findings as a comment and include any meaningful screenshots, etc.

1. Make various changes to entries while recording, while uploading or anywhere in between and make sure the recording never gets lost.

[github-actions]

Unit Test Results

362 tests   362 ✔️  16s ⏱️
  37 suites      0 💤
    1 files        0 ❌

Results for commit 4d28d8c.

[rmunn]

LGTM. The bit where we block UI updates if an upload is in progress might in theory have a better solution, but implementing that better solution would involve a LOT more work than it's worth considering that nobody will notice the UI updates being blocked in 99.8% of cases. So let's get this merged.