SMQ-2603 - Remove user from all entities on user deletion

[felixgateru]

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What does this do?

Which issue(s) does this PR fix/relate to?

• Related Issue #
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Notes

[SammyOina]

If possible we should go more level on spice db to delete the graph and all branches related to the user entity so this can work with modified spicedb schemas

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.19%. Comparing base (1f91de4) to head (c0562c2).
⚠️ Report is 610 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #3329       +/-   ##
===========================================
+ Coverage   21.34%   73.19%   +51.85%     
===========================================
  Files         147      153        +6     
  Lines       26244    17677     -8567     
===========================================
+ Hits         5601    12939     +7338     
+ Misses      20149     3795    -16354     
- Partials      494      943      +449     

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