introduce parameter object: downgrade accessibilty for inner classes (IDEADEV-35295)

java/java-tests/testData/refactoring/introduceParameterObject/usedInnerClass/before/Test.java

@@ -0,0 +1,7 @@
+class Test {
+  void foo(String s) {
+    bar(s);
+  }
+
+  void bar(String s){}
+}

java/java-tests/testData/refactoring/introduceParameterObject/usedInnerClass/before/Usage.java

@@ -0,0 +1,5 @@
+class Usage {
+  void barr(Test t) {
+    t.foo("");
+  }
+}