Copy: Rename only self-usages of the copied class

#KT-18034 Fixed

idea/testData/refactoring/copy/copyClassToSamePackageWithRename/after/foo/X.kt

@@ -0,0 +1,6 @@
+package foo
+
+class X {
+    val a: X = X()
+    val b: B = B()
+}

idea/testData/refactoring/copy/copyClassToSamePackageWithRename/after/foo/test.kt

@@ -0,0 +1,11 @@
+package foo
+
+class A {
+    val a: A = A()
+    val b: B = B()
+}
+
+class B {
+    val a: A = A()
+    val b: B = B()
+}