Replace deprecated CallMembership.sender with userId

src/utils/displayname.ts

@@ -65,7 +65,7 @@ export function shouldDisambiguate(
   // displayname, after hidden character removal.
   return (
     memberships
-      .map((m) => m.sender && room.getMember(m.sender))
+      .map((m) => m.userId && room.getMember(m.userId))
       // NOTE: We *should* have a room member for everyone.
       .filter((m) => !!m)
       .filter((m) => m.userId !== userId)

src/utils/test-viewmodel.ts

@@ -49,7 +49,7 @@ export function getBasicRTCSession(
       getChildEventsForEvent: vitest.fn(),
     } as Partial<RelationsContainer> as RelationsContainer,
     client: {
-      getUserId: () => localRtcMember.sender,
+      getUserId: () => localRtcMember.userId,
       getDeviceId: () => localRtcMember.deviceId,
       getSyncState: () => SyncState.Syncing,
       sendEvent: vitest.fn().mockResolvedValue({ event_id: "$fake:event" }),

src/utils/test.ts

@@ -210,11 +210,11 @@ export function mockMatrixRoomMember(
 ): RoomMember {
   return {
     ...mockEmitter(),
-    userId: rtcMembership.sender,
+    userId: rtcMembership.userId,
     getMxcAvatarUrl(): string | undefined {
       return undefined;
     },
-    rawDisplayName: rtcMembership.sender,
+    rawDisplayName: rtcMembership.userId,
     ...member,
   } as RoomMember;
 }