Formatter not preserving blank lines in indented blockquotes

[lucacasonato]

https://dprint.dev/playground/#code/IwOgBAhgUFZwfGARrBqyIMZA/language/markdown

Describe the bug

The formatter fails to preserve blank lines in blockquotes only if they are indented, resulting in the removal of blank lines between paragraphs within a blockquote.

dprint-plugin-markdown version: 0.15.2

Input Code

1. a

   > b
   >
   > c

Expected Output

1. a

   > b
   >
   > c

Actual Output

1. a

   > b
   > c