Bug: Markdown export breaks format when the line ends with the link

[piotr-musiol]

Lexical version: 0.31.0

Steps To Reproduce

1. type any phrase with bold or italic
2. end it with a link with the same bold/italic format (order doesn't matter, format can be added later)

3. transform to markdown

result:
The format tag (**) is not closed, which seems to be invalid and creates ** as artifacts

4. After transforming back from markdown, it looks broken:

Impact of fix

Well, I'd like to believe it can happen to anyone who needs to use the Markdown transformation, since it can be easily reproduced in every editor.

[etrepum]

/cc @AlessioGr - seems related to #7004