Pass a client into RoomNotifs.getRoomNotifsState (#9631)

Pass an explicit client into `RoomNotifs.getRoomNotifsState`, rather than
relying on `MatrixClientPeg`. This resolves a race condition where we have a
component which thinks it is using a particular component, but
`MatrixClientPeg` has been updated.

src/stores/local-echo/RoomEchoChamber.ts

@@ -50,7 +50,7 @@ export class RoomEchoChamber extends GenericEchoChamber<RoomEchoContext, CachedR
     private onAccountData = (event: MatrixEvent) => {
         if (event.getType() === EventType.PushRules) {
             const currentVolume = this.properties.get(CachedRoomKey.NotificationVolume);
-            const newVolume = getRoomNotifsState(this.context.room.roomId);
+            const newVolume = getRoomNotifsState(this.matrixClient, this.context.room.roomId);
             if (currentVolume !== newVolume) {
                 this.updateNotificationVolume();
             }
@@ -58,7 +58,10 @@ export class RoomEchoChamber extends GenericEchoChamber<RoomEchoContext, CachedR
     };
 
     private updateNotificationVolume() {
-        this.properties.set(CachedRoomKey.NotificationVolume, getRoomNotifsState(this.context.room.roomId));
+        this.properties.set(
+            CachedRoomKey.NotificationVolume,
+            getRoomNotifsState(this.matrixClient, this.context.room.roomId),
+        );
         this.markEchoReceived(CachedRoomKey.NotificationVolume);
         this.emit(PROPERTY_UPDATED, CachedRoomKey.NotificationVolume);
     }

src/stores/notifications/RoomNotificationState.ts

@@ -117,7 +117,9 @@ export class RoomNotificationState extends NotificationState implements IDestroy
             this._color = NotificationColor.Unsent;
             this._symbol = "!";
             this._count = 1; // not used, technically
-        } else if (RoomNotifs.getRoomNotifsState(this.room.roomId) === RoomNotifs.RoomNotifState.Mute) {
+        } else if (RoomNotifs.getRoomNotifsState(
+            this.room.client, this.room.roomId,
+        ) === RoomNotifs.RoomNotifState.Mute) {
             // When muted we suppress all notification states, even if we have context on them.
             this._color = NotificationColor.None;
             this._symbol = null;