✨(fullstack) support everyone_can_mute room configuration

Introduce a new room setting controlling whether all participants,
including non-privileged users, can mute others.

Update API validation accordingly and add the frontend controls
allowing administrators to toggle the option and persist the
configuration through the API.

src/backend/core/api/serializers.py

@@ -329,6 +329,7 @@ class RoomConfiguration(BaseModel):
     """
 
     can_publish_sources: list[RoomConfigurationTrackSource] | None = None
+    everyone_can_mute: bool | None = None
 
     model_config = {"extra": "forbid"}
 

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

@@ -122,6 +122,10 @@ def test_api_rooms_update_administrators():
         },
         {"can_publish_sources": []},
         {"can_publish_sources": None},
+        {"can_publish_sources": None, "everyone_can_mute": True},
+        {"can_publish_sources": None, "everyone_can_mute": False},
+        {"can_publish_sources": None, "everyone_can_mute": "yes"},
+        {"can_publish_sources": None, "everyone_can_mute": "1"},
     ],
 )
 def test_api_rooms_update_configuration_valid(configuration):
@@ -198,6 +202,24 @@ def test_api_rooms_update_configuration_wrong_type():
     assert room.configuration == {}
 
 
+@pytest.mark.parametrize("invalid_value", ["test", [], {}])
+def test_api_rooms_update_configuration_everyone_can_mute_wrong_type(invalid_value):
+    """everyone_can_mute values with wrong types should be rejected."""
+    user = UserFactory()
+    room = RoomFactory(users=[(user, "owner")])
+    client = APIClient()
+    client.force_login(user)
+
+    response = client.patch(
+        f"/api/v1.0/rooms/{room.id!s}/",
+        {"configuration": {"everyone_can_mute": invalid_value}},
+        format="json",
+    )
+    assert response.status_code == 400
+    room.refresh_from_db()
+    assert room.configuration == {}
+
+
 def test_api_rooms_update_administrators_of_another():
     """
     Being administrator or owner of a room should not grant authorization to update