Lexical version: ^0.32.1, 0.33.1

Steps To Reproduce

1. In rich-text editor, enter three lines of the text:
   aaa
   bbb
   ccc

2. Select only the middle line (bbb)

3. Apply code block formatting to the selection

4. Observe that the resulting code block unexpectedly includes ccc, instead of just wrapping the selected line

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

Worth noting: applying a code block to the last line works as expected