Deal with post type slugs which are the same across multiple languages

For example, if you have a post type called "media" and the languages on your site are English and French, the singular of "media" is the same in French and English. You therefore need the system to cope with these two URLs:

`http://example.com/en/media/asdffghj`
`http://example.com/fr/media/yrtweres`

Start by tracing how WordPress requests are routed for post type slugs when the language prefix is en or fr. Reproduce the two example URLs and inspect how the language and post are selected. Done means both URLs resolve to their language-specific posts even though the post type slug is identical.

Written by the indexing model from the issue text.