Consider adding warning for advanced indexing with logical indexer

Currently, we don't support [boolean indexing](https://numpy.org/doc/stable/user/basics.indexing.html#boolean-array-indexing) in our implementation of advanced indexing (`AdvancedIndexingNode`).

If an `ArrayNode` which is logical is used to index another node, `AdvancedIndexingNode` will simply treat it as any other integer indexer, and return a selection of the first and second elements of the main array. Though this is technically correct, it is somewhat of a departure from the numpy behavior.

To help clarify this to users, we could raise a warning if the indexer is logical to say that it will be treated as an integer index.