Indented list item of ordered list now creates an unordered list item

[skorasaurus]

Description

This has been tripping up some of our editors as we recently adopted WordPress 6.1 which included the adoption of list v2 block (admittedly, we missed it in some initial testing).

Previously, list v1 (in wordpress 5.9.x and wordpress 6.0.x, and before Gutenberg 14.0):

When an ordered list item would be indented; the indented list item would begin a new ordered list, as indicated in the gif below.

Now (WordPress 6.1; I didn't verify that this behavior was introduced in gutenberg 14.0 but I believe that when list v2 was adopted) when an ordered list item is indented; the default is to now make the indented list item to be unordered; as indicated in the gif below.

I'm unsure of whether this change in default behavior was intentional or not; I didn't find a ticket or comment regarding it and wasn't mentioned in the indenting or outdenting PR for list v2

Step-by-step reproduction instructions

1. create new list (ordered) block
2. add 2 or 3 list items
3. indent the last list item

Screenshots, screen recording, code snippet

No response

Environment info

WordPress 6.1; Gutenberg 14.5 activated (also able to replicate with gutenberg deactivated).

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

[github-actions]

Hi,
This issue has gone 180 days without any activity. This means it is time for a check-in to make sure it is still relevant. If you are still experiencing this issue with the latest versions, you can help the project by responding to confirm the problem and by providing any updated reproduction steps.
Thanks for helping out.

[skorasaurus]

still applicable in gutenberg 15.7.1

[foosantos]

I can still reproduce this issue as well, and it was recently reported again on #54577.

[threadi]

I can still reproduce it today with Gutenberg 19.9.0.