Active pattern identifiers with backticks are incorrectly displayed

[psfinaki]

Similar to #13593. Creating a separate issue so that we could have separate discussions about each case.

let (|``Thing with space``|_|) x = if x % 2 = 0 then Some (x/2) else None

match 4 with
| ``Thing with space`` _ -> "yes"
| _ -> "no"

For now should be displayed with backticks at least for consistency.