fixup! ✨(frontend) expose media state in the DOM for the Renater gateway

src/frontend/src/features/rooms/livekit/components/MediaStateObserver.tsx

@@ -1,4 +1,13 @@
 import { useLocalParticipant } from '@livekit/components-react'
+import { useEffect } from 'react'
+
+export const MEDIA_STATE_ELEMENT_ID = 'media-state'
+export const MEDIA_STATE_CHANGED_EVENT = 'media-state-changed'
+
+export type MediaStateChangedDetail = {
+  microphoneEnabled: boolean
+  cameraEnabled: boolean
+}
 
 /**
  * Exposes the local participant's media state in the DOM so external tools
@@ -11,9 +20,20 @@ import { useLocalParticipant } from '@livekit/components-react'
 export const MediaStateObserver = () => {
   const { isMicrophoneEnabled, isCameraEnabled } = useLocalParticipant()
 
+  useEffect(() => {
+    window.dispatchEvent(
+      new CustomEvent<MediaStateChangedDetail>(MEDIA_STATE_CHANGED_EVENT, {
+        detail: {
+          microphoneEnabled: isMicrophoneEnabled,
+          cameraEnabled: isCameraEnabled,
+        },
+      })
+    )
+  }, [isMicrophoneEnabled, isCameraEnabled])
+
   return (
     <div
-      id="media-state"
+      id={MEDIA_STATE_ELEMENT_ID}
       style={{ display: 'none' }}
       data-microphone-enabled={isMicrophoneEnabled ? 'true' : 'false'}
       data-camera-enabled={isCameraEnabled ? 'true' : 'false'}