KT-12046 Java to Kotlin dangerous conversion (recursive property set)

#KT-12046 Fixed

j2k/testData/fileOrElement/detectProperties/SetterWithSideEffect6.kt

@@ -0,0 +1,7 @@
+class C {
+    var x = ""
+        set(x) {
+            println("old value: " + this.x)
+            field = x
+        }
+}