RemoveUnusedImports false negative when the import is of an enum constant used as a switch target

Consider a Java file like this:

```java
import java.lang.annotation.ElementType;

import static java.lang.annotation.ElementType.CONSTRUCTOR;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;

class Dummy
{
public static void main(String[] args)
{
ElementType test = METHOD;
String result = switch (test)
{
case METHOD -> "m";
case FIELD -> "f";
default -> "o";
};
}
}
```

The Java file contains three static imports of an enum (`java.lang.annotation.ElementType`) constants: `CONSTRUCTOR`, `FIELD`, and `METHOD`. There is also a `switch` which has branches for `METHOD` and `FIELD`. The thing with switches is that the branch targets are "obvious" from the type of the value switched on, so they are not typical constant references and do not need to be neither fully qualified nor static-imported. So the static imports of `CONSTRUCTOR` and `FIELD` are not needed (`METHOD` is referenced directly in an assignment, so it's not unused). But the check reports only `CONSTRUCTOR`, which is neither referenced directly nor used as a branch target in the switch, and `FIELD` is a false negative.