KT-2247 Report name clashes between inner classes and members of class object

#KT-2247 Fixed

compiler/testData/diagnostics/tests/redeclarations/kt2247.kt

@@ -0,0 +1,14 @@
+//KT-2247 Report name clashes between inner classes and members of class object
+
+package kt2247
+
+class B {
+    class object {
+        class <!REDECLARATION!>Y<!> {
+        }
+    }
+
+    class <!REDECLARATION!>Y<!> {
+    }
+
+}