Given the following test case:

```
import java.util.function.Supplier;
interface Main {
    interface X<T> {
        X<T> self();
    }

    static X<?> makeX() {return null;}

    static <R> X<R> create(Supplier<? extends R> supplier) {return null;}

    static X<X<?>> methodRef() {
        return create(Main::makeX).self();
    }

    static X<X<?>> lambda() {
        return create(() -> makeX()).self();
    }
}
```

javac reports an error for the lambda, but not for the method reference. There should be no difference here (error in both cases)

reported by Tagir at: https://mail.openjdk.org/pipermail/compiler-dev/2025-October/031680.html