WP_Posts_List_Table::get_views() doesn't allow the "Mine" counts to be filtered

[pbiron]

​WP_Posts_List_Table::get_views() calls ​wp_count_posts() to get the counts for the various post statuses.

It then computes the count for posts owned by the current user for use in the "Mine" view. That computation uses $this->user_posts_count which is computed in ​WP_Posts_List_Table::__construct() with custom SQL.

The problem is that if you hook into the ​wp_count_posts filter and alter the counts for each post status you can end up with a situation where the "Mine" count is very different than the sum of the post status counts.

For example, I've got a CPT where some (but not all) of the posts of that type are just "placeholders" for posts of another CPT. I hide those "placeholder" posts from the list table by hooking into ​request and altering the request that the list table uses. I then hook into wp_count_posts to adjust the counts by post status accordingly (e.g., don't count the "hidden" posts). This results in a situation that could be very confusing for users (see screenshot).

Thus, I suggest that a filter be added to filter the value of $this->user_posts_count.