Prevent triggering hideSearchWords when closing the modal

[stsewd]

Two things:

• The scope of the event needs to be narrowed down
  (from document to just the modal).
• We need to call stopPropagation so the event isn't triggered for the
  document object.

Closes #103

[stsewd]

but now the modal isn't closed if the panel lost the focus (and hideSearchWords is triggered :/), was able to reproduce by clicking on the "white area" of the modal, but clicking on the search box gains the focus and escape works again.

[agjohnson]

It looks like you'll need to add an event listener for something other than the input box. This key code event is only on the search_outer_input element, where you likely also want to listen on search_outer.

[stsewd]

Docs should pass after #105 is merged, and you should be able to test this at https://readthedocs-sphinx-search--104.org.readthedocs.build/en/104/index.html?highlight=sphinx&rtd_search=press%20escape

[mgeier]

Could someone please rebase to check if it works now?

[stsewd]

This can be tested at https://readthedocs-sphinx-search--104.org.readthedocs.build/en/104/index.html?highlight=sphinx&rtd_search=press%20escape, but there is this small problem #104 (comment)