move inner: moved class should be checked if it contains inaccessible refs (IDEA-60450)

java/java-tests/testData/refactoring/moveInner/innerClassInheritance/after/p/A.java

@@ -0,0 +1,8 @@
+package p;
+
+class A {
+    private static class C {
+
+    }
+
+}

java/java-tests/testData/refactoring/moveInner/innerClassInheritance/after/p/B.java

@@ -0,0 +1,5 @@
+package p;
+
+class B extends A.C {
+
+}