Increasing the number of nodes returned by the retriever for a PropertyGraphIndex

The community member is asking if there is a way to increase the number of nodes returned by the retriever for a PropertyGraphIndex, as it seems to use a default limit of 30 nodes. Another community member confirms that they are using the VectorContextRetriever, which has a limit of 30 nodes when calling the ._graph_store.get_rel_map method. The community members suggest that this may be a bug or something that was not intended to be configurable, and that a pull request would be needed to expose the ability to configure this parameter.