Allow multiple values for string operators in the query builder (#42101)

e2e/test/scenarios/filters/filter-types.cy.spec.js

...nts/FilterModal/StringFilterEditor/StringFilterEditor.tsx

...Modal/StringFilterEditor/StringFilterEditor.unit.spec.tsx

...ts/FilterPicker/StringFilterPicker/StringFilterPicker.tsx

...icker/StringFilterPicker/StringFilterPicker.unit.spec.tsx

...rc/metabase/querying/hooks/use-string-filter/constants.ts

...nd/src/metabase/querying/hooks/use-string-filter/index.ts

...nd/src/metabase/querying/hooks/use-string-filter/types.ts

...ase/querying/hooks/use-string-filter/use-string-filter.ts

...ng/hooks/use-string-filter/use-string-filter.unit.spec.ts

...nd/src/metabase/querying/hooks/use-string-filter/utils.ts

...components/inputs/MultiAutocomplete/MultiAutocomplete.tsx