fix(ui): ensure issue urls use tmdb id

[ReenigneArcher]

Description

In some cases, the IMDB id is used for the issue URL instead of the TMDB. ThemerrDB only accepts TMDB ids, so this PR nullifies issue URLs for items where the TMDB cannot be determined.

Screenshot

Issues Fixed or Closed

• Fixes issue with ThemerrDB issue urls #328

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Dependency update (updates to dependencies)
• Documentation update (changes to documentation)
• Repository update (changes to repository files, e.g. .github/...)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the in code docstring/documentation-blocks for new or existing methods/components

Branch Updates

LizardByte requires that branches be up-to-date before merging. This means that after any PR is merged, this branch
must be updated before it can be merged. You must also
Allow edits from maintainers.

• I want maintainers to keep my branch updated

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (0a22784) 69.87% compared to head (d988603) 69.84%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #329      +/-   ##
==========================================
- Coverage   69.87%   69.84%   -0.04%     
==========================================
  Files          12       12              
  Lines         986      985       -1     
==========================================
- Hits          689      688       -1     
  Misses        297      297              

Flag	Coverage Δ
Linux	69.84% <100.00%> (-0.04%)	⬇️
Windows	69.84% <100.00%> (-0.04%)	⬇️
macOS	69.64% <100.00%> (-0.04%)	⬇️

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

Files	Coverage Δ
Contents/Code/webapp.py	66.46% <100.00%> (-0.20%)	⬇️