Generate EXPECTED_REACHABLE_NODES directive on JS box tests

js/js.translator/testData/box/extensionProperty/absExtension.kt

@@ -1,3 +1,4 @@
+// EXPECTED_REACHABLE_NODES: 488
 package foo
 
 val Double.abs: Double

js/js.translator/testData/box/extensionProperty/externalExtensionProperty.kt

@@ -1,3 +1,4 @@
+// EXPECTED_REACHABLE_NODES: 492
 // MODULE: lib
 // FILE: lib.kt
 

js/js.translator/testData/box/extensionProperty/inClass.kt

@@ -1,3 +1,4 @@
+// EXPECTED_REACHABLE_NODES: 494
 class A
 
 class B {

js/js.translator/testData/box/extensionProperty/privateExtensionProperty.kt

@@ -1,3 +1,4 @@
+// EXPECTED_REACHABLE_NODES: 492
 class A {
     fun result() = "OK"
 }

js/js.translator/testData/box/extensionProperty/propertyWithGetterAndSetter.kt

@@ -1,3 +1,4 @@
+// EXPECTED_REACHABLE_NODES: 496
 package foo
 
 class Test() {

js/js.translator/testData/box/extensionProperty/simplePropertyWithGetter.kt

@@ -1,3 +1,4 @@
+// EXPECTED_REACHABLE_NODES: 489
 package foo
 
 val String.prop: Int