'pre_get_posts' not working on search page for post types

[villesiltala]

There is a custom functionality in Geniem\RediPress\Search::posts_pre_query() that modifies post types before the search is executed. This functionality removes all modifications made in the pre_get_posts hook for the post_type query variable.

If RediPress would hook itself also on the pre_get_posts hook when modifying the post type query, plugins and other dependencies relying on that hook would not break when executing a search with RediPress.