fix: voice channels no longer ring on join

Omitting sendNotificationType for call rooms caused Element Call to
default to ring behavior. Now all starting-call events explicitly set
notification (or ring for DMs). Voice channels always get notification.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/plugins/call/CallEmbed.ts

@@ -130,7 +130,7 @@ export class CallEmbed {
       header: 'none',
     });
 
-    if (!room.isCallRoom() && CallEmbed.startingCall(intent)) {
+    if (CallEmbed.startingCall(intent)) {
       params.append('sendNotificationType', CallEmbed.dmCall(intent) ? 'ring' : 'notification');
     }