While a taxonomy can define a custom route by using the rest_base argument, a namespace of wp/v2 was assumed. This commit introduces support for a rest_namespace argument.
A new rest_get_route_for_taxonomy_items function has been introduced and the rest_get_route_for_term function updated to facilitate getting the correct route for taxonomies.
For maximum compatibility sticking with the default wp/v2 namespace is recommended until the API functions see wider use.
Props spacedmonkey.
Fixes#54267.
See [51962].
Built from https://develop.svn.wordpress.org/trunk@51964
git-svn-id: http://core.svn.wordpress.org/trunk@51553 1a063a9b-81f0-0310-95a4-ce76da25c4cd