fix: too narrow parent middleware, mv content type check to action

[jona159]

Type of Change

• Dependency upgrade
• Bug fix (non-breaking change)
• Breaking change
  • e.g. a fixed bug or new feature that may break something else
• New feature
• Code quality improvements
  • e.g. refactoring, documentation, tests, tooling, ...

Implementation

Checklist

• I gave this pull request a meaningful title
• My pull request is targeting the dev branch
• I have added documentation to my code
• I have deleted code that I have commented out

Additional Information

• This PR closes #

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	69.4%	2135 / 3076
🔵	Statements	67.88%	2205 / 3248
🔵	Functions	67.46%	421 / 624
🔵	Branches	52.98%	1021 / 1927

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
app/routes/api.boxes.ts	95.45%	94.44%	100%	95.45%	205, 255

Generated in workflow #2728 for commit 36c8d9b by the Vitest Coverage Report Action