Bug: Not all selected nodes are removed if a shadow root element is set at the end

[levensta]

Lexical version: 0.45

Steps To Reproduce

1. Insert collapsible container at the end of content
2. Select all (double press Ctrl + A)
3. Press Backspace

Link to code example

The current behavior

There are two empty paragraphs left in the document

delete.all.content.mov

The expected behavior

The document should have all content removed and only one empty paragraph left.ё

Impact of fix

Something similar happens if Columns Layout, Review, or Card is set at the end, and it seems to generally affect any shadow root elements. If the user wants to delete all content based on the selection, it's important to ensure consistent behavior and delete nodes regardless of their type