Can't type after clicking on the highlighted word

**Describe the bug**
I see a highlighted word and know how to fix this, but Harper doesn't allow me to type to fix the error manually, I can only choose from the predefined options.

**To Reproduce**
Steps to reproduce the behavior:
1. Open the demo on the frontpage: https://writewithharper.com/
2. Click by mouse on the "misspellled" word that us highlighted by red, precisely on the redundant "l".
3. Press "del" on the keyboard to remove it.
Actual result: nothing happens, because a popup appeared that blocks typing.
So, I can't use keyboard to type at all!

**Expected behavior**
The app should allow fixing the word manually, in addition to suggestions in the popup.
Could you please fix this? Thank you!

**Screenshots**

**Platform**
Firefox

Start by reproducing the issue in the Harper demo at https://writewithharper.com/ using Firefox: click the highlighted "misspellled" word and press Delete. Trace the popup's interaction with the editor, then verify that manual keyboard edits work while suggestions remain available.

Written by the indexing model from the issue text.