KT-18786: J2K should move all properties to top of class

#KT-18786 fixed

j2k/testData/fileOrElement/nullability/nullableInitializer2.kt

@@ -1,11 +1,11 @@
 // ERROR: Type mismatch: inferred type is String? but String was expected
 class TestJava {
-    fun nullableObj(p: Int): Any? {
-        return if (p > 0) "response" else null
-    }
 
     var nullableInitializerFieldCast: String = nullableObj(3) as String?
     private val nullableInitializerPrivateFieldCast = nullableObj(3) as String?
+    fun nullableObj(p: Int): Any? {
+        return if (p > 0) "response" else null
+    }
 
     fun testProperty() {
         nullableInitializerFieldCast[0]