[stable4] fix: simplify mime-type checks to support jpg and other image formats

[backportbot]

Backport of PR #2401

[codecov]

Codecov Report

Attention: Patch coverage is 37.50000% with 5 lines in your changes missing coverage. Please review.

Please upload report for BASE (stable4@7587b57). Learn more about missing BASE report.
Report is 1 commits behind head on stable4.

Additional details and impacted files

@@            Coverage Diff             @@
##             stable4    #2422   +/-   ##
==========================================
  Coverage           ?   35.45%           
  Complexity         ?     1032           
==========================================
  Files              ?       71           
  Lines              ?     3923           
  Branches           ?        0           
==========================================
  Hits               ?     1391           
  Misses             ?     2532           
  Partials           ?        0           

---- 🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests
• JS Bundle Analysis - Avoid shipping oversized bundles

[Chartman123]

@Koc you can add the adjustments into this PR :)

[Koc]

Everything is fine for me. Just tested it on local env

🔍 Preview

[Chartman123]

@Koc yes it will work. Our front-end only uses the new routes. But please add your change at uploadFiles() in ApiController also to uploadFilesLegacy().

This is required if someone uses our deprecated API.

[Koc]

ah, got it. @Chartman123 I've added change to uploadFilesLegacy as well.