Fix search was not stopped when leaving focus with esc key

[zoglo]

Description

This PR aims to refresh the list when clicking escape if a search is active.
There currently is a bug where you'd search for something and want to focus out of it when pressing escape - when this happens, you'll lose focus completely and there will not be any items left with a blank search input.

This can be reproduced in the current demo when searching for something and pressing escape - the choices will be gone and only appear again if you type something and then delete it again:
https://choices-js.github.io/Choices/

-> See Screenshot below

Screenshots (if appropriate)

Types of changes

• Chore (tooling change or documentation change)
• Refactor (non-breaking change which maintains existing functionality)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• My code follows the code style of this project.
• I have added new tests for the bug I fixed/the new feature I added.
• I have modified existing tests for the bug I fixed/the new feature I added.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[Xon]

this.refresh(false, false, true); is probably the wrong function to call here, as it it rebuilds the internal state from the raw <select>'s options list which is much more heavy weight than required.

I think swapping for this._stopSearch(); will make this work as expected

[zoglo]

this.refresh(false, false, true); is probably the wrong function to call here, as it it rebuilds the internal state from the raw <select>'s options list which is much more heavy weight than required.

I think swapping for this._stopSearch(); will make this work as expected

Yeah, just tested it and it works as espected - good catch, didn't see that method :')