Java: Fixed modifiers when extracting method from default or private method in interface (IDEA-211141)

java/java-tests/testData/refactoring/extractMethod/FromPrivateMethodInInterface_after.java

@@ -0,0 +1,12 @@
+public interface FromPrivateMethodInInterface {
+    private void test(String a, String b) {
+
+        newMethod(a, b);
+
+    }
+
+    private void newMethod(String a, String b) {
+        String c = a + b;
+        System.out.println(c);
+    }
+}