Forum and topic `_bbp_count_*` meta keys are not deleted when trashing a forum

[netweb]

Repro:

• 1. Create a forum Test, a topic Test in the Test forum and finally create a reply to Test topic
  • Results in a forum post (and revision), a topic, and a reply in wp_posts
  • Results in the following in wp_postmeta
  • 

• 2. Trash the forum and empty the trash
  • Results in both the forum post and the revision, the topic, and the reply deleted from wp_posts and works as expected.
  • Results in the following forum and topic meta not deleted:
  • 

Each of the following forum and topic _bbp_count* meta keys should be deleted when trashing a forum just as it currently does and works expected for the forum and topic for _bbp_last* and _bbp_*_id meta keys

Forum meta

• _bbp_reply_count
• _bbp_total_reply_count
• _bbp_forum_subforum_count
• _bbp_topic_count
• _bbp_total_topic_count
• _bbp_topic_count_hidden

Topic Meta

• _bbp_voice_count
• _bbp_reply_count
• _bbp_reply_count_hidden

Note: The above tables post_id's 1 was the forum, 3 was the topic, and 8 was the reply

[johnjamesjacoby]

I wonder if this is still the case. We should be able to write good tests for this, and get it into 2.7 early.