Call static methods the right way

[andizer]

I saw there were to call to methods that are declared static but called accessed $this, so I've fixed these two.

[TimothyBlynJacobs]

Good catch!

There are a couple of other places where this could be fixed as well. In rest_preload_api_request() and in WP_REST_Controller::prepare_response_for_collection()

[andizer]

Fixes other occurrences of calling this static method not the static way.

[andizer]

@TimothyBlynJacobs I've fixes these occurrences as well.

[TimothyBlynJacobs]

Thanks for the updated patch, one last adjustment needed. Those replacements should use $server::get_compact_response_links() to ensure that a subclassed WP_REST_Server that replaces the get_compact_response_links method has its changes respected.

[SergeyBiryukov]

In 45566:

REST API: Call WP_REST_Server::get_compact_response_links() and ::get_raw_data() static methods the right way.

Props andizer, TimothyBlynJacobs.
Fixes #47578.