StaticType fix

src/effect/schema/class/util.ts

@@ -1,7 +1,7 @@
-import type { Struct } from "@effect/schema/Schema"
+import { Schema as S } from "@effect/schema"
 
 
-export type HasFields<Fields extends Struct.Fields> = (
+export type HasFields<Fields extends S.Struct.Fields> = (
     | { readonly fields: Fields }
     | { readonly from: HasFields<Fields> }
 )