[JS] Invalid quotation of union string cases

### Description

```fs
type S = S of string


let s = sprintf "%A" (S "1")

printfn "%A" (s = "S \"1\"")
printfn "%A" ("S \"1\"")
printfn "%A" (s)
```

gives

```text
false
S "1"
S 1
```

instead of 


```text
true
S "1"
S "1"
```

### Related information

* Fable version: `4.17.0`
* Operating system: 
