When pressing backspace at the start of heading, Lexical deletes the prior line as expected but resets the note to paragraph

Paragraph

## Heading
Paragraph

In this text, if the cursor is placed just left of the "H" and I hit backspace, this becomes

Paragraph
Paragraph
Paragraph

Was able to replicate in the playground on windows+chrome

Desired behaviour: delete the prior empty line to achieve

Paragraph
## Heading
Paragraph

Edit for clarity