API: Fix error code for disabled popular endpoint

[iBicha]

When visiting /api/v1/popular and popular endpoint is disabled
Before:

500 {"error":"Closed stream"}

After

403 {"error":"Administrator has disabled this endpoint."}

[github-actions]

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[iBicha]

Bump

[iBicha]

I don't know what changed, but /api/v1/popular now returns

400 {"error":"Administrator has disabled this endpoint."}

Closing

[syeopite]

The PR should probably still be kept to change the HTTP status code from 400 to 403.

The former doesn't exactly fit for a disabled endpoint

[iBicha]

The PR should probably still be kept to change the HTTP status code from 400 to 403.

The former doesn't exactly fit for a disabled endpoint

Fair - updated PR

[SamantazFox]

Thanks for the fix!