StructuredFormatDisplay is not used by formatted strings

[weebs]

type [<StructuredFormatDisplay("{Display}")>] Foo = 
    { a: int }
    with
    member this.Display = $"Foo {{ a = {this.a} }}"

let foo = { a = 1337 }

printfn $"{foo}"

Same behavior for printfn "%A" foo

node Program.fs.js
{ a = 1337 }

dotnet run
Foo { a = 1337 }

I ran into this with a cyclic data structure in my project that causes the Fable formatter to throw. I wouldn't mind taking a look at this myself when I have time but wanted to document the case since I hadn't seen any other issues for it yet