[REF-3583] The app doesn't respect CORS

[picklelo]

Discussed in https://github.com/orgs/reflex-dev/discussions/3813

^{Originally posted by dcn0907 August 20, 2024}
The api_url and the cors configuration is not been takken by the app, I'm deploying the frontend in vercel and the backend in render, when I try to run the app changing the url it doesn't break. It's steel working even in the local host.
import reflex as rx

config = rx.Config(
app_name="link_bio",
cors_allowed_origins=[
"https://grone-web-bice.vercel.app/"
]
)

_REF-3583