release ol/ul issue

[yyechan]

Checklist

• I've looked at the documentation to make sure the behavior isn't documented and expected.
• I'm sure this is an issue with Summernote, not with my app or other dependencies (Angular, Cordova, React, etc.).
• I've searched through the current issues to make sure this hasn't been reported yet.
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Steps to reproduce

1. Click numbered/unodered list button
2. Type any text and Indent list
3. Enter at empty nested list

Expected behavior

Release OL/UL tag or outdent level of nested OL/UL at empty LI tag

Current behavior

Release OL/UL tag, and Unnecessary line breaks and empty OL/UL tags are created.

Minimal example reproducing the issue

No response

Environment

• Summernote version: Latest commit of the develop branch
• Browser (with version): chrome
• OS/Platform (with version): windows 10

[DennisSuitters]

Have you tried building the latest source? @HoffmannTom has been working on and submitting PR's addressing several issues related to using lists.

[HoffmannTom]

Yes, I also saw this issue among the ul/ol issues.
Still working on it.

[HoffmannTom]

I created PR #4636 to address several issues when working with lists.
I couldn't reproduce the mentioned issue anymore.
Some glitches are still present, e. g. when the <li> contains additional formatting. This needs to be fixed in the future too.