add_filter(
   'friends_can_update_modified_feed_posts',
    function(
        bool $true,
        $item,
        $user_feed,
        $friend_user,
        $post_id
    ) {
        // Your code here.
        return $true;
    },
    10,
    5
);

apply_filters( 'friends_can_update_modified_feed_posts', true, $item, $user_feed, $friend_user, $post_id )