[bug/qol?] abstract over map instantiated with `[]` gets typed to an array

```hx
class Test {
static function main() {
var map:Foo = [];
}
}

abstract Foo(Map) from Map {
public function new(value:Map = null) {
this = value ?? [];
}
}
```
This fails to compile however the below works fine

```hx
var map:Map = []
```