### What? Update `SelectFieldBaseClientProps` type so `value` accepts `string[]` for `hasMany` selects ### Why? Multi-selects currently error with “Type 'string[]' is not assignable to type 'string'”. ### How? - Change `value?: string` to `value?: string | string[]` - Also adds additional multi select custom component to `admin` test suite for testing --------- Co-authored-by: Jarrod Flesch <jarrodmflesch@gmail.com>