fix: tiny fix on home discussions table

[edelclaux]

Ajout d'un petit fix pour régler le problème de la pagination quand on utilise le switch de mes discussions.
La pagination est maintenant réinitialisée lors de la mise à jour de la valeur de "Mes discussions".

Au passage, deux trois petits refacto de simplification des paramètres de pagination sur la route appelée

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.92%. Comparing base (30c2726) to head (0029980).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3288   +/-   ##
========================================
  Coverage    83.92%   83.92%           
========================================
  Files          122      122           
  Lines         9691     9691           
========================================
  Hits          8133     8133           
  Misses        1558     1558           

Flag	Coverage Δ
pytest	83.92% <100.00%> (ø)

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