Lexical version:
0.40.0

Steps To Reproduce

1. Insert a list node with a nested list.
2. Select the entire nested list and part of the parent list.
3. Press Backspace to delete the selected content.
   The nested list is not fully removed; instead, it shifts forward.
   

Link to code example:
https://playground.lexical.dev/

The current behavior

The nested list is not removed

The expected behavior

The nested list is emoved

Impact of fix