Add comments to highlight where we'll need m.widget support

For https://github.com/vector-im/riot-web/issues/13111

src/components/views/settings/tabs/room/RolesRoomSettingsTab.js

@@ -33,6 +33,7 @@ const plEventsToLabels = {
     "m.room.tombstone": _td("Upgrade the room"),
     "m.room.encryption": _td("Enable room encryption"),
 
+    // TODO: Enable support for m.widget event type (https://github.com/vector-im/riot-web/issues/13111)
     "im.vector.modular.widgets": _td("Modify widgets"),
 };
 
@@ -47,6 +48,7 @@ const plEventsToShow = {
     "m.room.tombstone": {isState: true},
     "m.room.encryption": {isState: true},
 
+    // TODO: Enable support for m.widget event type (https://github.com/vector-im/riot-web/issues/13111)
     "im.vector.modular.widgets": {isState: true},
 };