fix: organizer search by track, speaker, session

[maze-runnar]

Fixes #6655

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the Upstream development branch.
• The acceptance, integration, unit tests and linter pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

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[codecov]

Codecov Report

Merging #6670 (2ae06da) into development (297df6c) will not change coverage.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##           development    #6670   +/-   ##
============================================
  Coverage        21.74%   21.74%           
============================================
  Files              545      545           
  Lines             6111     6111           
  Branches           131      131           
============================================
  Hits              1329     1329           
  Misses            4756     4756           
  Partials            26       26           

Impacted Files	Coverage Δ
app/routes/events/view/sessions/list.js	3.84% <0.00%> (ø)

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