[views/workflow/tmppng] fix console crash on nth call to this one-shot view
The underlying design issue is not addressed here, only a cosmetic and
"we understand and document what's happening" note.
Related to #3400448.
if versions_map['cubicweb'][0] == (3, 7, 4):
config['http-session-time'] *= 60
config['cleanup-session-time'] *= 60
config['cleanup-anonymous-session-time'] *= 60