[frontend] Fix "Select all" not available for relationship creation (#6407)

[SarahBocognano]

Proposed changes

• As said in the issue the disabled "select all" was there on purpose. To avoid the pain of entities by entities selection, we just add the possiblity to MAJ+select to perform bulk selection for both StixCoreRelationships & StixNestedRef. By selecting the correct filters, users will still be able to perform a mutli select more quickly and painlessly.

Related issues

• "Select all" not available for relationship creation #6407

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.78%. Comparing base (ed2e24d) to head (e351acb).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6574   +/-   ##
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  Coverage   67.77%   67.78%           
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  Files         532      532           
  Lines       65102    65102           
  Branches     5469     5470    +1     
=======================================
+ Hits        44124    44127    +3     
+ Misses      20978    20975    -3     

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[marieflorescontact]

locally tested ok 👌