[bugfix] Fix tag trailing comma

[FinalDoom]

Filter empty tags when submitting a tag change via modal

Description

Empty tags are generally disallowed by input filtering, but a trailing comma is allowed in the tag input, which results in an empty tag. When submitted to the backend, this returns an error, and the modal hangs as loading.

This change will remove any empty tags, such as that generated by a trailing comma, prior to backend submission.

Types of changes

• Breaking change (changes that break backward compatibility of public API or CLI - semver MAJOR)
• New feature (non-breaking change which adds functionality - semver MINOR)
• Bug fix (non-breaking change which fixes an issue - semver PATCH)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (20a672a) 73.15% compared to head (16e15b0) 73.14%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #715      +/-   ##
==========================================
- Coverage   73.15%   73.14%   -0.01%     
==========================================
  Files          62       62              
  Lines       11375    11375              
  Branches      959      958       -1     
==========================================
- Hits         8321     8320       -1     
- Misses       3040     3041       +1     
  Partials       14       14              

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