`chemical` SPARQL queries need checking to not run on legacy

[egonw]

The follow panel/SPARQL queries need updating:

• [x] https://github.com/WDscholia/scholia/blob/main/scholia/app/templates/chemical_structural-identifiers.sparql
• [x] https://github.com/WDscholia/scholia/blob/main/scholia/app/templates/chemical_identifiers.sparql
• [x] https://github.com/WDscholia/scholia/blob/main/scholia/app/templates/chemical_related.sparql
• [ ] https://github.com/WDscholia/scholia/blob/main/scholia/app/templates/chemical_recent-literature.sparql
• [ ] publications per year
• [x] https://github.com/WDscholia/scholia/blob/main/scholia/app/templates/chemical_biological-processes.sparql
• [x] https://github.com/WDscholia/scholia/blob/main/scholia/app/templates/chemical_found-in-matrix-np.sparql
• [x] https://github.com/WDscholia/scholia/blob/main/scholia/app/templates/chemical_found-in-taxon.sparql

[egonw]

The ones for publications need a good bit more time to update :/