fix: re-apply desired device state after EC joins, support mid-call PTT

src/app/plugins/call/CallEmbed.ts

@@ -47,6 +47,8 @@ export class CallEmbed {
 
   private readonly disposables: Array<() => void> = [];
 
+  private readonly initialState: CallControlState;
+
   static getIntent(dm: boolean, ongoing: boolean): ElementCallIntent {
     if (ongoing) {
       return dm ? ElementCallIntent.JoinExistingDM : ElementCallIntent.JoinExisting;
@@ -149,6 +151,7 @@ export class CallEmbed {
 
     const controlState = initialControlState ?? new CallControlState(true, false, true);
     this.control = new CallControl(controlState, call, iframe);
+    this.initialState = controlState;
 
     let initialMediaEvent = true;
     this.disposables.push(
@@ -251,6 +254,8 @@ export class CallEmbed {
     this.joined = true;
     this.applyStyles();
     this.control.startObserving();
+    // EC ignores io.element.device_mute before join; re-apply desired state now that EC is live
+    this.control.forceState(this.initialState);
   }
 
   private applyStyles(): void {