Use list picker when searching a single value (#49323)

* WIP: use list picker when searching a single value

* Add test case for multi vs non-multi search fields

* Update loki snapshots

* Add special case to test for multiautocomplete filter

* Use single select value in test

* Add test for using list picker

* Explicitly make sure elements are visible

* Do not use list selector when search is disabled

* Add margin to multi autocomplete dropdown

* Update loki snapshots

* Update loki snapshots