Fixed output of structs inside arrays without indexes

This is the case for curves inside mixes, which would previously prevent outputting all attributes following the `curve` attribute: `delayUp`, `delayDown`, `speedUp`, `speedDown` and `name`.

radio/src/storage/yaml/yaml_tree_walker.cpp

@@ -496,7 +496,7 @@ bool YamlTreeWalker::generate(yaml_writer_func wf, void* opaque)
             }
             else {
 
-                if (isParentArrayElmt() && !toParent())
+                if (isParentArrayElmt() && (getParent() == node) && !toParent())
                     return false;
                 
                 // walk to next non-empty element