The pages list table uselessly queries post formats

[Chouby]

On the pages list table, Query Monitor reports unexpectedly this DB query:

SELECT t.*, tt.*
FROM wp_terms AS t
INNER JOIN wp_term_taxonomy AS tt
ON t.term_id = tt.term_id
WHERE tt.taxonomy IN ('post_format')
AND tt.count > 0
ORDER BY t.name ASC

As the 'post_format' taxonomy is not defined for the 'page' post type, there should be no need to query post formats.

[SergeyBiryukov]

In 48203:

Posts, Post Types: Return early from WP_Posts_List_Table::formats_dropdown() if the post type does not support post formats.

This avoids an unnecessary database query for the post_format taxonomy.

Props Chouby.
Fixes #50496.