fix pvb_constraint with coercion after 5.2 AST upgrade #2839
Description
this
let x :> [> `A | `B ] = `A;reformats to
let x: :> [>
| `A
| `B
] = `A;there's an extra : in there, we should fix it
{{ message }}
this
let x :> [> `A | `B ] = `A;reformats to
let x: :> [>
| `A
| `B
] = `A;there's an extra : in there, we should fix it