🚩(frontend) display transcript item only for admin/owner

Only room admin/owner should be abble to start a transcript.

src/frontend/src/features/rooms/api/ApiRoom.ts

@@ -3,6 +3,7 @@ export type ApiRoom = {
   name: string
   slug: string
   is_public: boolean
+  is_administrable: boolean
   livekit?: {
     url: string
     room: string

src/frontend/src/features/rooms/livekit/components/controls/Options/TranscriptMenuItem.tsx

@@ -44,7 +44,8 @@ export const TranscriptMenuItem = () => {
 
   if (
     !apiConfig.recording?.is_enabled ||
-    !apiConfig.recording?.available_modes?.includes(RecordingMode.Transcript)
+    !apiConfig.recording?.available_modes?.includes(RecordingMode.Transcript) ||
+    !data.is_administrable
   ) {
     return
   }