J2K: adapted for default visibility modifier 'public'

j2k/testData/fileOrElement/function/overrideObject3.kt

@@ -1,10 +1,10 @@
-open class Base {
+internal open class Base {
     override fun equals(o: Any?): Boolean {
         return super.equals(o)
     }
 }
 
-class X : Base() {
+internal class X : Base() {
     override fun equals(o: Any?): Boolean {
         return super.equals(o)
     }