pull up: protect pulled class private members (IDEA-60729)

java/java-tests/testData/refactoring/pullUp/PullUpPrivateInnerClassWithPrivateConstructor.java

@@ -0,0 +1,15 @@
+public class B extends A {
+    private void f(){
+        new C();
+    }
+      <caret>
+    private static class C{
+        private C(){
+
+        }
+    }
+}
+
+//A.java
+class A {
+}