jvm-abi-gen: Add tests for uses of private Kotlin classes from Java

plugins/jvm-abi-gen/testData/compile/privateAnnotationsFromJavaApp/app/lib/J.java

@@ -0,0 +1,8 @@
+package lib;
+
+@A(value = "OK")
+public class J {
+    public static String value() {
+        return J.class.getAnnotation(A.class).value();
+    }
+}