Fix: Expand and de-clutter menus for matching search results in homepage #2264 (#2277)

* Hide empty menus that don't match search criteria

- Hide empty menus (accordions/feature groups) that don't match search criteria.

* Expand menus automatically for matching search results

- Fix a bug where menus (accordions/feature groups) did not automatically expand on the homepage when search results matched.

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Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>