msggen: Fix Missing `RefProperty.recursive`

Summary:
This was missing, causing the test to fail.

Changelog:
[Internal]

Reviewed By: mhorowitz

Differential Revision: D28009429

fbshipit-source-id: 51d4366b4feb6a2300c5bd05007dd9455bdcd77b

ReactCommon/hermes/inspector/tools/msggen/src/Property.js

@@ -154,6 +154,7 @@ class RefProperty extends Property {
   constructor(domain: string, obj: any) {
     super(domain, obj);
     this.$ref = obj.$ref;
+    this.recursive = obj.recursive;
   }
 
   getRefDebuggerName(): ?string {