Use modified /questions endpoint to search bookmarks

[jacbn]

Rather than relying on front-end filtering of the entire list of bookmarks, instead use the modified /questions endpoint to allow our ES filtering to run this in precisely the same manner as for other uses of the endpoint.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.55%. Comparing base (a1ee401) to head (39dd16f).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...components/elements/modals/QuestionSearchModal.tsx	0.00%	12 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2208      +/-   ##
==========================================
+ Coverage   43.54%   43.55%   +0.01%     
==========================================
  Files         597      597              
  Lines       25217    25209       -8     
  Branches     7478     8375     +897     
==========================================
  Hits        10981    10981              
+ Misses      14187    14179       -8     
  Partials       49       49              

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[axlewin]

Looks good.

Not sure if you want to hold off on merging this until the corresponding API changes have been through a release cycle; maybe since this'll only affect people with the feature flag on we don't need to wait.