bug/feature remove validate referer before oidc

[itaybar]

			const validOrigins = [
				new URL(event.request.url).host,
				...(envPublic.PUBLIC_ORIGIN ? [new URL(envPublic.PUBLIC_ORIGIN).host] : []),
			];

			if (!validOrigins.includes(new URL(origin).host)) {
				return errorResponse(403, "Invalid referer for POST request");
			}

chat-ui/src/hooks.server.ts

Line 142 in 58c1890

const validOrigins = [

In this code found in src/hooks.server.ts there is validation rather the referer is from the PUBLIC_ORIGIN, this is bad for 2 reasons,

1. the OIDC provider it self will validate the referer
2. If the is an NGINX (or other similar product), it will failed that for no reason (and you can't just configure the PUBLIC_ORIGIN to be your Nginx one because in this way you are have to use the NGINX and can't access straight which is weird