feat: allow LDAP sync to pre-create federated users

[pierre-lehnen-rc]

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[dionisio-bot]

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Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 59.73%. Comparing base (3d212d8) to head (48298c5).

Additional details and impacted files

@@                      Coverage Diff                      @@
##           fix/federation-display-names   #35668   +/-   ##
=============================================================
  Coverage                         59.72%   59.73%           
=============================================================
  Files                              2832     2832           
  Lines                             68892    68888    -4     
  Branches                          15283    15281    -2     
=============================================================
  Hits                              41148    41148           
+ Misses                            25067    25062    -5     
- Partials                           2677     2678    +1     

Flag	Coverage Δ
unit	75.91% <0.00%> (-0.01%)	⬇️

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[pierre-lehnen-rc]

moved this into two PRs:
#35717
#35718