Cursor span element is not removed with Delete/Backspace

[ViktorZhurbin]

Steps for Reproduction

1. Visit https://quilljs.com/playground/snow
2. Add a new line in the editor (Shift+Enter)
3. Turn on inline formatting, like bold
4. Try to remove contents with Cmd+A and Delete

Expected behavior: Content removed and placeholder is displayed

Actual behavior: Ghost <span class="ql-cursor"></span> element stays in editor and placeholder is not displayed

Platforms: Tested in Chrome on MacOS

Version: v2.0.2

https://github.com/user-attachments/assets/bf761bfb-7fd5-4de7-a515-bc1830b67bf8