gall: initialize sub-nonce as 1 during upgrade
This matches the bunt of 1 for the new ship case. A nonce of 0 is
semantically mapped to old-style subscriptions.
=/ [=bitt =boat =boar] (watches-8-to-9 watches.egg-8)
:* control-duct.egg-8
run-nonce.egg-8
- sub-nonce=0
+ sub-nonce=1
live.egg-8
stats.egg-8
bitt boat boar
