Fix for folder watch if model is not downloaded yet

[raivisdejus]

Fix for #1069

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 79.89%. Comparing base (ed54b94) to head (5587fcd).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
buzz/widgets/transcription_task_folder_watcher.py	50.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1088      +/-   ##
==========================================
- Coverage   79.91%   79.89%   -0.03%     
==========================================
  Files          87       87              
  Lines        5328     5332       +4     
==========================================
+ Hits         4258     4260       +2     
- Misses       1070     1072       +2     

Flag	Coverage Δ
Linux	78.65% <50.00%> (-0.03%)	⬇️
Windows	78.37% <50.00%> (-0.03%)	⬇️
macOS	79.25% <50.00%> (-0.03%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.