Properly resolving types in ChangeMethodParameters refactoring.

[lahodaj]

Consider code like:

package test;

import java.util.List;

public class JavaApplication113 {

    public List<String> test(String str) {
        return null;
    }

    public static class SubClass extends JavaApplication113 {

        @Override
        public java.util.List<java.lang.String> test(java.lang.String str) {
            return null;
        }
        
    }
}

put cursor at JavaApplication113.test, open the Refactor/Change Method Parameters, and add a new parameter with type java.util.List<java.lang.String> and name par1. The refactoring will use java.util.List<java.lang.String> as the parameter type that is written in the source code. I think imports should be properly resolved on every place where the type is printed, and typically java.util.List should be imported, and the inserted type should be List<String>.

This is what this PR is attempting to do.