refactor: improve memoisation on table rows

apps/client/src/views/cuesheet/cuesheet-table/cuesheet-table-elements/GroupRow.tsx

@@ -1,6 +1,6 @@
 import { Table, flexRender } from '@tanstack/react-table';
 import { EntryId, SupportedEntry } from 'ontime-types';
-import { CSSProperties } from 'react';
+import { CSSProperties, memo } from 'react';
 import { IoEllipsisHorizontal } from 'react-icons/io5';
 
 import IconButton from '../../../../common/components/buttons/IconButton';
@@ -20,7 +20,8 @@ interface GroupRowProps {
   hasCursor?: boolean;
 }
 
-export default function GroupRow({
+export default memo(GroupRow);
+function GroupRow({
   groupId,
   colour,
   rowId,