✨(backend) expose is_authenticated in the LiveKit token

Include the is_authenticated flag on the user in the LiveKit token
and participant metadata.

The frontend needs this information (used in the next commit) to
know whether it can offer to promote a user with access to the room
admin.

src/backend/core/tests/rooms/test_api_rooms_retrieve.py

@@ -12,7 +12,7 @@ import pytest
 from rest_framework.test import APIClient
 
 from ...factories import RoomFactory, UserFactory, UserResourceAccessFactory
-from ...models import RoomAccessLevel, RoleChoices
+from ...models import RoleChoices, RoomAccessLevel
 
 pytestmark = pytest.mark.django_db
 

src/backend/core/utils.py

@@ -128,7 +128,11 @@ def generate_token(
         .with_identity(identity)
         .with_name(display_name)
         .with_attributes(
-            {"color": color, "room_role": role }
+            {
+                "color": color,
+                "room_role": role,
+                "is_authenticated": "true" if user.is_authenticated else "false",
+            }
         )
     )
 

src/frontend/src/features/rooms/utils/getParticipantIsAuthenticated.ts

@@ -0,0 +1,8 @@
+import type { Participant } from 'livekit-client'
+
+export const getParticipantIsAuthenticated = (
+  participant: Participant
+): boolean => {
+  const isAuthenticated = participant.attributes?.is_authenticated
+  return isAuthenticated == 'true'
+}