feat: Create Ephemeral Message for mentioned users that are not in the channel

[PedroRorato]

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[changeset-bot]

⚠️ No Changeset found

Latest commit: bcc9882

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[codecov]

Codecov Report

Merging #30412 (bcc9882) into develop (3677cc5) will decrease coverage by 6.69%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop   #30412      +/-   ##
===========================================
- Coverage    50.18%   43.50%   -6.69%     
===========================================
  Files          781      741      -40     
  Lines        14507    13481    -1026     
  Branches      2621     2485     -136     
===========================================
- Hits          7281     5865    -1416     
- Misses        6829     7270     +441     
+ Partials       397      346      -51     

Flag	Coverage Δ
e2e	40.83% <ø> (-7.77%)	⬇️
unit	60.30% <ø> (ø)

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[gabriellsh]

Closing in favor of #30464