onSelect item should trigger store.pendingRequests.cancelAll();

## Description

Following of this issue : #806, when we programatically call `setIsOpen(false)` to the `Autocomplete` instance, the current requests are not cancelled and the panel re-open when queries finish.

## Reproduction

[**Preview →**](https://codesandbox.io/s/algolia-autocomplete-example-react-renderer-forked-997sxn?file=/src/index.tsx)

**Steps**

1. Go to the code sandbox
2. Click on the Search and type 'd', wait for results to display
3. Pass your browser network in slow mode
4. Type 'deb' in the search bar and immediately select an item from the previous search (that will trigger a `setIsOpen(false)` + `history.push` to bring you to the item subpage)
5. React router change the components of the user, the search is correctly closed
6. As requests are not cancelled, when one finish, the autocomplete panel re-open

## Expected behavior

When the autocomplete `isOpen` become false, all existing queries should be cancelled so the autocomplete panel re-open only if the input take focus again.

## Environment

- OS: Windows 10
- Browser: Chrome
- Autocomplete version: 1.11.1

Start with the Autocomplete onSelect flow and the setIsOpen(false) behavior described in the reproduction, then trace how store.pendingRequests is managed when the panel closes. Reproduce the slow-network case in the linked CodeSandbox; done means selecting an item cancels outstanding requests and the panel does not reopen when they finish.

Written by the indexing model from the issue text.