Fixing unit tests for branch-quick-links.js

[drashti1712]

• Fixed and added unit tests to increase code coverage of branch-quick-links.js

Resolves: MWPW-164132

Test URLs:

• Before: https://main--milo--adobecom.aem.page/?martech=off
• After: https://UT-fix--milo--adobecom.aem.page/?martech=off

[aem-code-sync]

	Page	Scores	Audits	Google
📱	/?martech=off
🖥️	/?martech=off

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.45%. Comparing base (e4558c9) to head (60743dd).
Report is 5 commits behind head on stage.

Additional details and impacted files

@@            Coverage Diff             @@
##            stage    #3515      +/-   ##
==========================================
- Coverage   96.46%   96.45%   -0.01%     
==========================================
  Files         260      260              
  Lines       60417    60417              
==========================================
- Hits        58281    58276       -5     
- Misses       2136     2141       +5     

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[spadmasa]

No validation needed , pr is for UT coverage , adding the label.

[milo-pr-merge]

Skipped 3515: "Fixing unit tests for branch-quick-links.js" due to file "test/features/branch-quick-links/branch-quick-links.test.js" overlap. Merging will be attempted in the next batch