Stop an incorrect comment total being displayed when a trashed/spammed comment...

Stop an incorrect comment total being displayed when a trashed/spammed comment is deleted or restored. Fixes #19029.

Also only run getUpdate() when necessary and remove reference to non-existent "span.total-type-count".


git-svn-id: https://core.svn.wordpress.org/trunk@19068 1a063a9b-81f0-0310-95a4-ce76da25c4cd