ETQ Instructeur, je peux filtrer sur les colonnes de csv mm si elles comportent un nil

[LeSim]

https://demarches-simplifiees.sentry.io/issues/6316943474/?environment=production&project=1429550&query=is%3Aunresolved%20issue.priority%3A%5Bhigh%2C%20medium%5D&referrer=issue-stream&sort=date&statsPeriod=1h&stream_index=6

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.47%. Comparing base (dbe4d51) to head (a894823).
Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #11346   +/-   ##
=======================================
  Coverage   84.47%   84.47%           
=======================================
  Files        1214     1214           
  Lines       26717    26717           
  Branches     5064     5064           
=======================================
+ Hits        22568    22569    +1     
+ Misses       4149     4148    -1     

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