fix(comfyui): drop the snippet that made nginx reject the whole ingress

The controller logs "annotation group ConfigurationSnippet contains risky
annotation" and a rejected annotation group drops the entire ingress from
nginx.conf. comfyui.riotpiao.com therefore answered 404 for every request with no
line in the access log, which is why the host looked routed but served nothing.

ingress-nginx sets the Upgrade and Connection headers itself for a websocket
upgrade, so the snippet was never needed.

k8s/apps/comfyui/ingress.yaml

@@ -18,9 +18,11 @@ metadata:
     nginx.ingress.kubernetes.io/auth-url: "http://comfyui-oauth2-proxy.comfyui.svc.cluster.local:4180/oauth2/auth"
     nginx.ingress.kubernetes.io/auth-signin: "https://comfyui.riotpiao.com/oauth2/start?rd=$scheme://$host$request_uri"
     nginx.ingress.kubernetes.io/auth-response-headers: "x-auth-request-user,x-auth-request-email"
-    nginx.ingress.kubernetes.io/configuration-snippet: |
-      proxy_set_header Upgrade $http_upgrade;
-      proxy_set_header Connection "upgrade";
+    # No configuration-snippet. The controller rejects that annotation as risky
+    # ("annotation group ConfigurationSnippet contains risky annotation"), and a
+    # rejected annotation drops the WHOLE ingress from nginx.conf: the host then
+    # answers 404 with no entry in the access log. ingress-nginx sets the Upgrade
+    # and Connection headers itself for a websocket upgrade.
 spec:
   ingressClassName: nginx
   rules: