[frontend] fetch creators on observable creation (#8686)

[delemaf]

Proposed changes

• On observable creation, creators are now fetched after creation
• Added some typings to StixCyberObservableCreation and removed useless undefined props

Related issues

• Close Author not assigned as Creator if object created outside Report #8686

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case (coverage and e2e)
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality

Further comments

I've added objectOrganization to me object in useAuth if it may be use anywhere else

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.93%. Comparing base (d3a85de) to head (44a7719).
Report is 22 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9056      +/-   ##
==========================================
+ Coverage   64.68%   65.93%   +1.24%     
==========================================
  Files         620      624       +4     
  Lines       59208    59976     +768     
  Branches     6520     7617    +1097     
==========================================
+ Hits        38301    39546    +1245     
+ Misses      20907    20430     -477     

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[SouadHadjiat]

tested locally ✅