fix: Wildcard operator behavior is different after $map

[Gobinath-B]

Description

The inner map function effectively produces a sequence of objects, but it also produces a result for each element processed. This result is true because there's no explicit return statement. In many programming languages, a function that doesn't explicitly return anything will return a default value, which is often true.

if (typeof node.ancestor === 'undefined') {
                            node.ancestor = slot;
                        } else {
                            // reuse the existing label
                            ancestry[slot.index].slot.label = node.ancestor.label;
                            node.ancestor = slot;
                        }
                    // node.tuple = true
                    }
                    break;