Ensure deserialized Array is ordered by index

Object.keys does not guarantee any particular order, which could result
in an out-of-order array if we did not sort said keys.

addons/knobs/src/components/types/Array.js

@@ -50,7 +50,9 @@ ArrayType.serialize = value => value;
 ArrayType.deserialize = value => {
   if (Array.isArray(value)) return value;
 
-  return Object.keys(value).reduce((array, key) => [...array, value[key]], []);
+  return Object.keys(value)
+    .sort()
+    .reduce((array, key) => [...array, value[key]], []);
 };
 
 export default ArrayType;