paragraph-ignore-fill-prefix

paragraph-ignore-fill-prefix is a variable defined in `paragraphs.el'.
Its value is

nil

• This variable is safe as a file local variable if its value
  satisfies the predicate `booleanp'.

Documentation:
Non-nil means the paragraph commands are not affected by `fill-prefix'.
This is desirable in modes where blank lines are the paragraph delimiters.

You can customize this variable.