fix: Number of ticket calculation transpilation

[iamareebjamal]

Fixes #5117

For some reason, babel wasn't transpiling data.tickets?.length || 0 correctly. It transpiled it to 0 statically meaning no matter what the case, number of tickets were evaluated to 0

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[codecov]

Codecov Report

Merging #5119 into development will not change coverage.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##           development    #5119   +/-   ##
============================================
  Coverage        22.80%   22.80%           
============================================
  Files              489      489           
  Lines             5169     5169           
  Branches            35       35           
============================================
  Hits              1179     1179           
  Misses            3985     3985           
  Partials             5        5           

Impacted Files	Coverage Δ
app/mixins/event-wizard.js	0.98% <0.00%> (ø)

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