docs-bug(COMPONENT): I can no longer view the docs with m2 specs (the default styles) for version v17.X

### Documentation Feedback

The version switcher on the docs site allows me to switch between latest and v16, but not between latest and v17.1, which is the version of Angular Material before the components began switching to m3 specs. Because v16 is not 1:1 compatible with v17, this means there's no way to view the documentation for a version that I (and probably many others) am stuck using for an indefinite period of time.

### Affected documentation page

https://material.angular.io/components/categories

Start with the version switcher on https://material.angular.io/components/categories and compare the available latest, v16, and v17.1 documentation versions. Trace the documentation site's version configuration and verify that v17.1 can be selected and displays the pre-M3 component documentation alongside the existing versions.

Written by the indexing model from the issue text.