fix: skip fake playUrl writes in Media ensurePlayUrl

Preserve the control-plane toast and avoid treating fake:// as a
real playable URL for open/toggle state.

src/views/MediaView/MediaView.vue

@@ -187,7 +187,7 @@ async function ensurePlayUrl(dockId, sessionId, { force = false } = {}) {
       if (disposed || seq !== openSeq || activeLive.sessionId !== sessionId) return play
       const nowSec = Math.floor(Date.now() / 1000)
       const expiresAt = Number(play?.expiresAt) || nowSec + PLAY_EXPIRE_FALLBACK_SEC
-      if (play?.playUrl) {
+      if (play?.playUrl && !String(play.playUrl).startsWith('fake://')) {
         activeLive.playUrl = play.playUrl
         activeLive.playUrlExpiresAt = expiresAt
       }