[rich-text-editor] Error thrown when selecting and removing multi-line text

[web-padawan]

Description

When typing text with multiple lines, selecting it and pressing Backspace the following error is thrown:

keyboard.js:375 Uncaught ReferenceError: DeltaOp is not defined
    at Vt.Jt (keyboard.js:375:10)
    at keyboard.js:111:67
    at Array.some (<anonymous>)
    at HTMLDivElement.<anonymous> (keyboard.js:87:24)
Jt @ keyboard.js:375
(anonymous) @ keyboard.js:111
(anonymous) @ keyboard.js:87

This is most probably a regression from #7613 and especially vaadin/quill#4

Expected outcome

There should be no error.

Minimal reproducible example

Can be reproduced in the dev page.

Steps to reproduce

1. Type something in the vaadin-rich-text-editor
2. Press Enter and type some more characters
3. Select all the text and delete it using Backspace
4. Check the console for errors

Environment

Vaadin version(s): 24.5 (latest)

Browsers

No response