inline: check accessibility according to the file scope (IDEA-152181)

java/java-tests/testData/refactoring/inlineMethod/PrivateFieldInSuperClassInSameFile.java.after

@@ -0,0 +1,12 @@
+class Test {
+  class A {
+    private Integer i = 0;
+
+  }
+
+  class B extends A {
+    void bar(A a) {
+        a.i.toString();
+    }
+  }
+}