BUG: Issue with rich text editor Indent action for Lists

GrapesJS version

• I confirm to use the latest version of GrapesJS

What browser are you using?

Chrome V115

Reproducible demo link

https://jsfiddle.net/srinivas977/ahgLxv6e/10/

Describe the bug

How to reproduce the bug?

1. In the provided JSFiddle, include a pair of text lines and select lists. Next, append a sub-list, and then add the sub-list. Afterward, clicking outside the chosen element causes one of the items in the sub-list to vanish.

The occurrence is also visible in this video link(notice it from 30th second in the video):

https://github.com/GrapesJS/grapesjs/assets/49796104/59de9aa5-5f3f-43ae-9ed1-358b86ac8b27

What is the expected behavior?

1. The items within the sub-list must not vanish.
2. Upon selecting the indent action, it is automatically assigned the same type (ordered/unordered list) as its parent list by default, which results in invalid HTML. Example: Element 'ol' not allowed as child of element 'ol'

What is the current behavior?

1. The items in the sub-list are vanishing
2. It should validate the HTML and assign the corresponding (ordered/unordered list tag) based on the parent tag ...

Code of Conduct

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