Make PrivateConstructorForUtilityClass pass for non-exported class with main method

Given a class with a main method and without instance methods:

when:

* either the class is within a module and is either non-public or not in an exported package
* or the class is not within a module and is non-public

and all static methods other than the main method, if any, are private,

then the check should pass.

The check is useful, so I want to enable it, but to me the above case qualifies as a false positive.