[backend] avoid user deletion raising exception when authorized_member is missing (#5580)

[aHenryJard]

Proposed changes

• From this piece of error logs on the issue:

{"message":"Cannot read properties of undefined (reading 'some')","name":"TypeError","stack":"TypeError: Cannot read properties of undefined (reading 'some')\n    at isUserTheLastAdmin (/opt/opencti/build/src/domain/user.js:734:49)\n    at /opt/opencti/build/src/domain/user.js:746:34\n    at Array.filter (<anonymous>)\n    at deleteAllWorkspaceForUser (/opt/opencti/build/src/domain/user.js:746:6)\n    at processTicksAndRejections (node:internal/process/task_queues:95:5)\n    at userDelete (/opt/opencti/build/src/domain/user.js:831:3)"}

I think it's because authorized_member is undefined. Not sure why it happen but it should not prevent from user deletion.

• I'm proposing to delete the Workspace when authorized_member is undefined, if you prefer to just skip it (maybe safer) please tell me.

Reproduced with the test before changing code

Related issues

• Account deletion error #5580

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

If this is a relatively large or complex change, kick off the discussion by explaining why you chose the solution you did and what alternatives you considered, etc...

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (605eb54) 66.14% compared to head (8fe3e6d) 66.15%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5747      +/-   ##
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+ Coverage   66.14%   66.15%   +0.01%     
==========================================
  Files         513      513              
  Lines       60805    60809       +4     
  Branches     4447     4450       +3     
==========================================
+ Hits        40220    40229       +9     
+ Misses      20585    20580       -5     

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