Gemini: Pass down additional arguments and kw/value arguments to low level raw query

This allows people to use the helper method while still adding in any extra parameters they may want to pass to the web API.

Locate the Gemini helper method and the low-level raw-query entry point, then inspect how arguments are currently passed to the web API. Done means the helper forwards additional arguments and kw/value arguments while retaining its existing behavior; add or update focused tests if the surrounding code identifies a test location.

Written by the indexing model from the issue text.