test: prevent useInviteToken multiple times

[ggazzo]

https://rocketchat.atlassian.net/browse/ARCH-1531

https://rocketchat.atlassian.net/browse/FLAKY-684

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[dionisio-bot]

Looks like this PR is not ready to merge, because of the following issues:

• This PR is targeting the wrong base branch. It should target 7.6.0, but it targets 7.5.0

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[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.72%. Comparing base (5e3ab1a) to head (e96f587).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #35648      +/-   ##
===========================================
- Coverage    59.72%   59.72%   -0.01%     
===========================================
  Files         2829     2829              
  Lines        68233    68230       -3     
  Branches     15125    15124       -1     
===========================================
- Hits         40751    40748       -3     
  Misses       24874    24874              
  Partials      2608     2608              

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