[backend] avoid useless operations during batched replace (#6297)

[marieflorescontact]

Proposed changes

• In the case of a REPLACE relationship (with a marking, label, etc.) we check if the toId contained in value is not already in the element's relationships.

Related issues

• issue/6297

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 ✅

Project coverage is 66.97%. Comparing base (d857cc0) to head (20ecacd).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6354      +/-   ##
==========================================
+ Coverage   66.76%   66.97%   +0.20%     
==========================================
  Files         541      541              
  Lines       64542    64557      +15     
  Branches     5306     5313       +7     
==========================================
+ Hits        43091    43234     +143     
+ Misses      21451    21323     -128     

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[labo-flg]

RCA on the counter issues: this id here is supposed to be an internal id and not a standard id. In the task manager the new check compares to an internal id.

[marieflorescontact]

fixed