fix: call ring modal only fires for DMs and private group chats

Space voice channels send room-level RTC notifications (m.mentions.room)
whenever any member joins. Previously this triggered the incoming call
ring modal for every member of the space, as if they were personally
being called.

Fix: before setting callInfo, check whether the room is a DM (in
mDirectAtom) or a private non-space group (invite/knock/restricted join
rule AND no m.space.parent state event). Space channels and public rooms
are excluded — joining them should never ring other members.

Added JoinRule to the matrix-js-sdk import. Added directs to the
useCallback dependency array so the closure sees the current DM set.

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

src/app/components/CallEmbedProvider.tsx

@@ -19,6 +19,7 @@ import {
 import {
   EventTimelineSetHandlerMap,
   EventType,
+  JoinRule,
   RelationType,
   Room,
   RoomEvent,
@@ -323,6 +324,19 @@ function IncomingCallListener({ callEmbed, joined }: IncomingCallListenerProps)
       );
       if (!hasCallPermission) return;
 
+      // Only ring for DMs or private non-space group chats.
+      // Space voice channels and public rooms fire room-level RTC notifications
+      // whenever anyone joins — ringing every member is incorrect behaviour.
+      const isDirect = directs.has(room.roomId);
+      const isSpaceChild = !!getStateEvent(room, StateEvent.SpaceParent);
+      const joinRule = room.getJoinRule();
+      const isPrivateGroup =
+        !isSpaceChild &&
+        (joinRule === JoinRule.Invite ||
+          joinRule === JoinRule.Knock ||
+          joinRule === JoinRule.Restricted);
+      if (!isDirect && !isPrivateGroup) return;
+
       const info: IncomingCallInfo = {
         room,
         sender,
@@ -338,7 +352,7 @@ function IncomingCallListener({ callEmbed, joined }: IncomingCallListenerProps)
 
       setCallInfo(info);
     },
-    [mx],
+    [mx, directs],
   );
 
   useEffect(() => {