Don't extend frame support in expansion to @default.

Author: gkellogg

lib/expand.js

@@ -69,6 +69,11 @@ api.expand = ({
     return null;
   }
 
+  // disable framing if activeProperty is @default
+  if(activeProperty === '@default') {
+    options = Object.assign({}, options, {isFrame: false});
+  }
+
   if(!_isArray(element) && !_isObject(element)) {
     // drop free-floating scalars that are not in lists unless custom mapped
     if(!insideList && (activeProperty === null ||