cinny: enable mozilla.org (OIDC/next-gen-auth homeserver)

Now that the client supports MSC3861 OIDC login, add mozilla.org to the
homeserverList and its origins to the CSP. mozilla delegates: homeserver ->
mozilla.modular.im, OIDC issuer -> chat.mozilla.org, identity -> vector.im.
- connect-src += mozilla.org mozilla.modular.im chat.mozilla.org vector.im
- img-src += mozilla.org mozilla.modular.im
Applied live to LXC 106 and synced here.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

cinny/config.json

@@ -2,7 +2,8 @@
   "defaultHomeserver": 0,
   "homeserverList": [
     "matrix.lotusguild.org",
-    "matrix.org"
+    "matrix.org",
+    "mozilla.org"
   ],
   "allowCustomHomeservers": false,
   "featuredCommunities": {