reverting to acct full identifier, inside mention links

src/components/mention.tsx

@@ -29,10 +29,10 @@ const Mention: React.FC<IMention> = ({ mention: { acct, username }, disabled })
         onClick={handleClick}
         dir='ltr'
       >
-        @{isPubkey(username) ? username.slice(0, 8) : username}
+        @{isPubkey(username) ? username.slice(0, 8) : acct}
       </Link>
     </Tooltip>
   );
 };
 
-export default Mention;
+export default Mention;