Replace the calling of this pointer in public static function

[jialong-google]

Replaced the calling of this pointer with class name reference instead to prevent run time err.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (99b2139) to head (06eac82).

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #87   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           18        18           
  Lines         4578      4578           
  Branches       632       632           
=========================================
  Hits          4578      4578           

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[hildjj]

What sort of error does this cause?

[jialong-google]

This would have an err"Uncaught TypeError: Cannot read properties of undefined (reading 'tags')" which caused my service worker registration failed.