Fix support for static trait property methods

Consider the following:
```groovy
trait T {
  static final int zero
  static int one = 1
}
class C implements T {
}
```

```java
public class J {
  static void test() {
    C.getZero();
    T.getZero(); // expect error
    C.getOne();
    T.getOne(); // expect error
    C.setOne(-1);
  }
}
```

References from Java class to trait-generated methods are showing as undefined.

see #1652 #1113