Update tests for getAccessToken refresh flow

[tusharpandey13]

This PR updates the test for the flow getAccessToken({ refresh: true })

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 149 lines in your changes missing coverage. Please review.

Project coverage is 75.08%. Comparing base (f1eb46d) to head (5ac4166).

Files with missing lines	Patch %	Lines
src/server/get-access-token.test.ts.ts	0.00%	148 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2068      +/-   ##
==========================================
- Coverage   82.68%   75.08%   -7.61%     
==========================================
  Files          21       22       +1     
  Lines        1958     2107     +149     
  Branches      347      331      -16     
==========================================
- Hits         1619     1582      -37     
- Misses        333      517     +184     
- Partials        6        8       +2     

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