fix: re-apply request label on comment command edit

[ReenigneArcher]

Description

• re-apply request label on comment command edits in order to trigger new workflow run
• fix undeclared variable issue on approve command
• reduce number of api calls to add approve-queue and approve-theme labels
• only edit issue if body actually changes

Screenshot

Issues Fixed or Closed

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 (56b5ac5) 88.68% compared to head (124d1ac) 88.68%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2614   +/-   ##
=======================================
  Coverage   88.68%   88.68%           
=======================================
  Files           1        1           
  Lines         327      327           
=======================================
  Hits          290      290           
  Misses         37       37