regression: Hide mentions filter

[dougfabris]

Proposed changes (including videos or screenshots)

Important

This change is under feature preview

Introduced here: #36049

Issue(s)

Steps to test or reproduce

Further comments

SIDE2-139

[dionisio-bot]

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Latest commit: 9814a88

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.73%. Comparing base (9650020) to head (9814a88).
⚠️ Report is 3 commits behind head on reg/sidebar-filters-issues.

Additional details and impacted files

@@                      Coverage Diff                       @@
##           reg/sidebar-filters-issues   #36751      +/-   ##
==============================================================
- Coverage                       65.77%   64.73%   -1.04%     
==============================================================
  Files                            3256     3220      -36     
  Lines                          108519   107779     -740     
  Branches                        20680    20501     -179     
==============================================================
- Hits                            71375    69775    -1600     
- Misses                          34480    35478     +998     
+ Partials                         2664     2526     -138     

Flag	Coverage Δ
e2e	53.47% <ø> (-3.71%)	⬇️
unit	71.24% <ø> (+0.01%)	⬆️

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