batches: recalculate preview stats on publication states change
Created by: courier-new
Okay so I know I said #24120 was supposed to be the last UI piece but...
This PR hooks up the stats at the top of the preview page to also recalculate when the publication states are modified.
https://user-images.githubusercontent.com/8942601/130157727-3471b590-176f-4fcb-9297-9c1dba2c49ed.mov
Closes #22912 (closed).