perf(server): Reduce database query

Related: #6813

src/server/api/endpoints/notes/children.ts

@@ -64,7 +64,11 @@ export default define(meta, async (ps, user) => {
 				}));
 			}));
 		}))
-		.leftJoinAndSelect('note.user', 'user');
+		.leftJoinAndSelect('note.user', 'user')
+		.leftJoinAndSelect('note.reply', 'reply')
+		.leftJoinAndSelect('note.renote', 'renote')
+		.leftJoinAndSelect('reply.user', 'replyUser')
+		.leftJoinAndSelect('renote.user', 'renoteUser');
 
 	generateVisibilityQuery(query, user);
 	if (user) generateMutedUserQuery(query, user);