Focus on editor upon page loading

web/pages/messages/[channelId].tsx

@@ -145,6 +145,12 @@ export const PrivateChat = (props: {
     placeholder: 'Send a message',
   })
 
+  useEffect(() => {
+    if (editor) {
+      editor.commands.focus()
+    }
+  }, [editor])
+
   useEffect(() => {
     setAsSeen(channelId)
   }, [JSON.stringify(messages)])