fix(cors): fix acao header

[aaharu]

resolves #355

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.76%. Comparing base (a58d7c9) to head (eddcc5c).
Report is 172 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #870      +/-   ##
==========================================
+ Coverage   77.83%   78.76%   +0.93%     
==========================================
  Files          47       43       -4     
  Lines        4286     3292     -994     
  Branches      611      793     +182     
==========================================
- Hits         3336     2593     -743     
+ Misses        933      696     -237     
+ Partials       17        3      -14     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[pi0]

Can you please add a regression test?

[aaharu]

It's going to be a conflict, so I'll work on it after #856.