When typing Japanese, pressing the Enter key to confirm completion selects the document.

## Description

Pressing Enter when the text input is not finalized will take you to the document.

## Steps to reproduce

1. Type Japanese using Google Japanese Input.
2. Press the Enter key to confirm your input.
3. redirect to the document.

**Live reproduction:**
- https://jestjs.io/ja/


## Expected behavior
1. Input Japanese using Google Japanese Input.
2. Press the Enter key to confirm your input.
3. The input is confirmed.

## Environment
- OS: macOS 11.6.2
- Browser: Google Chrome
- DocSearch version: 3.0.0

Start by reproducing the issue at https://jestjs.io/ja/ with Google Japanese Input in Chrome on macOS, then trace the DocSearch search input's Enter-key handling during Japanese composition. Done means confirming Japanese input with Enter no longer redirects to the selected document, while ordinary search selection still works.

Written by the indexing model from the issue text.