Bard MediumEditor - Undo list removes the whole paragraph

[krausste]

Describe the bug
When converting an paragraph into a list item via the MediumEditor you shouldn't undo the step. What would happen is that the wohl list item gets deleted and you won't get your paragraph back.

To Reproduce
Steps to reproduce the behavior:

1. Create a new entry which has a bard field
2. Click into the bard field and enter a text
3. Press Enter to create a paragraph
4. Mark the paragraph's text
5. Create a list item out of it
6. Undo this step

Expected behavior
List style is removed and the text appears inside paragraph again.

Environment details (please complete the following information):

• Statamic Version 2.9.4

[jackmcdade]

I wish this bug wasn't on the third-party MediumEditor package side, but alas, it is. A lot of people have wrestled with it though, so I'm adding some resources for us to keep an eye on:

• ul/ol and ctrl+z bug yabwe/medium-editor#1013
• Undo Manager yabwe/medium-editor#564