Feature: support empty line in markdown

[addlistener]

In https://playground.lexical.dev/ if you enter multiple line breaks and toggle markdown twice. The empty lines will be eaten.

I checked the code https://github.com/facebook/lexical/blob/main/packages/lexical-markdown/src/MarkdownImport.ts#L80-L81 and I guess it's not implemented?

[StyleT]

See for the reference: https://www.w3schools.io/file/markdown-line-break/

[addlistener]

See for the reference: https://www.w3schools.io/file/markdown-line-break/

I totally get it that we can use \ or <br/>. I'm thinking some opinionated markdown plugin since it should not be included as a default.

[Shopiley]

Hi, can I take this up?

[etrepum]

Sure, nobody else has participated on this issue in months, it's safe to say that nobody is currently working on it.