Test https://scholia-qlever.toolforge.org/ for traffic-related issues

[Daniel-Mietchen]

As per

• Migration of QLever-backed Scholia to Toolforge #2766

Depends on

• Set up a Toolforge copy of the QLever-based Scholia at https://scholia-qlever.toolforge.org/ #2768

[Daniel-Mietchen]

Pay special attention to the behavior when multiple queries are running in parallel and adjust wikiqlever resources as needed.