[backend] Add relatedRestrictions in stream

[marieflorescontact]

Proposed changes

• Add relatedRestrictions in stream : previously only instance's objectMarking were send into the stream. We now send added objects's objectMarking
• Add unit test

Related issues

• Improve confidentiality of history #9211

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.15%. Comparing base (dc916f5) to head (9bd8455).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9251      +/-   ##
==========================================
+ Coverage   65.14%   65.15%   +0.01%     
==========================================
  Files         630      630              
  Lines       60147    60167      +20     
  Branches     6706     6718      +12     
==========================================
+ Hits        39181    39201      +20     
  Misses      20966    20966              

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