fix: Scheduler track color and obsolete action

[iamareebjamal]

Fixes #4755

[vercel]

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[codecov]

Codecov Report

Merging #4756 into development will decrease coverage by 0.10%.
The diff coverage is 100.00%.

@@               Coverage Diff               @@
##           development    #4756      +/-   ##
===============================================
- Coverage        22.96%   22.86%   -0.11%     
===============================================
  Files              478      478              
  Lines             5024     5051      +27     
  Branches             8        8              
===============================================
+ Hits              1154     1155       +1     
- Misses            3869     3895      +26     
  Partials             1        1              

Impacted Files	Coverage Δ
app/components/scheduler/unscheduled-session.js	77.77% <100.00%> (ø)
app/router.js	100.00% <0.00%> (ø)
app/sentry.ts	0.00% <0.00%> (ø)
app/routes/public/sessions/list.js	0.00% <0.00%> (ø)
app/routes/events/view/scheduler.js	0.00% <0.00%> (ø)
app/routes/public/sessions/view.js
app/controllers/public/sessions/view.js
app/controllers/public/session/view.js	0.00% <0.00%> (ø)
app/routes/public/session/view.js	0.00% <0.00%> (ø)

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