test: resolve failing test for empty tokens

[aeneasr]

Related issue(s)

Checklist

• I have read the contributing guidelines.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
• I am following the
  contributing code guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security vulnerability, I
  confirm that I got the approval (please contact
  security@ory.sh) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.

Further Comments

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (087748c) 78.34% compared to head (f570833) 78.33%.
Report is 5 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3775      +/-   ##
==========================================
- Coverage   78.34%   78.33%   -0.02%     
==========================================
  Files         348      348              
  Lines       23999    24011      +12     
==========================================
+ Hits        18803    18810       +7     
- Misses       3776     3779       +3     
- Partials     1420     1422       +2     

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