fix: Show error details on deleting event

[blossom2017]

Fixes #3508

Short description of what this resolves:

Changes proposed in this pull request:

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)

[vercel]

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[codecov]

Codecov Report

Merging #4819 into development will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@               Coverage Diff               @@
##           development    #4819      +/-   ##
===============================================
- Coverage        23.50%   23.49%   -0.01%     
===============================================
  Files              481      481              
  Lines             5079     5081       +2     
  Branches            16       16              
===============================================
  Hits              1194     1194              
- Misses            3881     3883       +2     
  Partials             4        4              

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

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