fix: fix bug where search cannot be done without fully clearing input

[thaddmt]

Overview

• Bug discovered where user cannot perform a search without clearing the text box

• Fixes https://github.com/maplibre/maplibre-gl-geocoder/issues/73

  • [x] briefly describe the changes in this PR
  • [x] write tests for all new functionality
  • [x] run npm run docs and commit changes to API.md
  • [x] update CHANGELOG.md with changes under main heading before merging

[thaddmt]

@wipfli yes! my bad forgot that the issue was filed in the amplify ui repo - https://github.com/maplibre/maplibre-gl-geocoder/issues/73