[charts] redirect uses section id instead of section path

Wrong: https://2023.stateofjs.com/en-US/libraries/front_end_frameworks/
Right: https://2023.stateofjs.com/en-US/libraries/front-end-frameworks/

This is because `subSectionId` is used instead of getting the section object and then using `section.path`.

Start by tracing the charts redirect handling and the lookup for the section object versus subSectionId. Reproduce the redirect and verify that the resulting URL uses the section path, producing `front-end-frameworks` rather than `front_end_frameworks`.

Written by the indexing model from the issue text.