regression: Fix reactions tooltip (#31570)

apps/meteor/client/components/message/content/Reactions.tsx

@@ -26,7 +26,7 @@ const Reactions = ({ message }: ReactionsProps): ReactElement => {
 						counter={reactions.usernames.length}
 						hasReacted={hasReacted}
 						name={name}
-						names={reactions.usernames.filter((user) => user !== username)}
+						names={reactions.usernames.filter((user) => user !== username).map((username) => `@${username}`)}
 						messageId={message._id}
 						onClick={() => toggleReactionMutation.mutate({ mid: message._id, reaction: name })}
 					/>

apps/meteor/client/components/message/content/reactions/Reaction.tsx

@@ -97,7 +97,7 @@ const Reaction = ({ hasReacted, counter, name, names, messageId, ...props }: Rea
 			tabIndex={0}
 			role='button'
 			// if data-tooltip is not set, the tooltip will close on first mouse enter
-			data-tooltip
+			data-tooltip=''
 			onMouseEnter={async (e) => {
 				e.stopPropagation();
 				e.preventDefault();