Bug: Passing an empty ParagraphNode to $dfs incorrectly returns content from subsequent paragraphs

[matsuyama-k1]

Lexical version: 0.14.5

Steps To Reproduce

1. create empty ParagraphNode and following ParagraphNodes
2. search empty paragraph with $dfs returns following paragraph nodes too

Link to code example: https://codesandbox.io/p/sandbox/icy-smoke-3j6p79

The current behavior

$dfs returns next paragraph contents when pass empty paragraph.

The expected behavior

$dfs returns only itself when pass empty paragraph.