Bug: Editor lost its own selection when focus set inside external dialogs

[placeba]

Lexical version: 0.13.1

Steps To Reproduce

1. Type any text.
2. Click on 'Insert link' button.
3. Wait until the dialog opens and sets focus.
4. Click on 'Insert link' button a few times.

https://github.com/facebook/lexical/assets/3251933/4648471a-b677-4689-8db4-e359c82c361c

The current behavior

$getSelection() returns null.

[WoodenPC]

Facing same problem, +1

[acmoles]

I've seen users add onMouseDown={(e) => e.preventDefault()} to menu items to prevent losing editor focus/selection.

Obviously it would be nice if this wasn't an issue.