fix: Add extra value paths for view speaker handler

[divyamtayal]

Fixes #4559

Short description of what this resolves:

Event id was undefined, now fixed

Changes proposed in this pull request:

• Added Speaker Property

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 #5405 into development will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           development    #5405   +/-   ##
============================================
  Coverage        23.30%   23.30%           
============================================
  Files              491      491           
  Lines             5127     5127           
  Branches            37       37           
============================================
  Hits              1195     1195           
  Misses            3927     3927           
  Partials             5        5           

Impacted Files	Coverage Δ
app/controllers/events/view/speakers/list.js	0.00% <ø> (ø)

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[divyamtayal]

@iamareebjamal Please review this PR.