Replace usage of <></> with null for project and style consistency

src/context/revoltjs/Notifications.tsx

@@ -216,7 +216,7 @@ function Notifier({ options, notifs }: Props) {
             document.removeEventListener("visibilitychange", visChange);
     }, [guild_id, channel_id]);
 
-    return <></>;
+    return null;
 }
 
 const NotifierComponent = connectState(

src/context/revoltjs/StateMonitor.tsx

@@ -63,7 +63,7 @@ function StateMonitor(props: Props) {
         return () => clearInterval(interval);
     }, [ props.typing ]);
 
-    return <></>;
+    return null;
 }
 
 export default connectState(

src/context/revoltjs/SyncManager.tsx

@@ -110,7 +110,7 @@ function SyncManager(props: Props) {
         return () => client.removeListener('packet', onPacket);
     }, [ disabled, props.sync ]);
 
-    return <></>;
+    return null;
 }
 
 export default connectState(