Merge pull request #33931 from abhayinh/fix/tags-filter-undefined

UI: Prevent crash when tag filters contain undefined entries

Author: yannbf

code/core/src/manager/components/sidebar/TagsFilterPanel.tsx

@@ -18,9 +18,9 @@ import { styled } from 'storybook/theming';
 import type { Link } from '../../../components/components/tooltip/TooltipLinkList';
 
 export const groupByType = (filters: Filter[]) =>
-  filters.reduce(
+  filters.filter(Boolean).reduce(
     (acc, filter) => {
-      acc[filter.type] = acc[filter.type] || [];
+      acc[filter.type] ??= [];
       acc[filter.type].push(filter);
       return acc;
     },