Round ETH and AVAX observed gas amount up, not down

[Version-unspecific.]

Closes #1431 (closed).

While not relating to blockchain consensus failure,
this needs chain observation halts(?) while a supermajority of nodes switch over so that all observed transactions can reach consensus.

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2022-11-03 edit: Adding contrasting screenshots from the 2022-11-03 churn:

https://etherscan.io/address/0x31243f25008655dc00113bc2273b969f680393a0
(1 hour 24 minutes between second-to-last (8 o' clock) ETH.ETH migrate and last migrate
(the last migrate being 12 seconds after the noop:novault ETH.ETH transfer)) https://etherscan.io/address/0x61cea4244cadec655ff773a145d748641a926786
(2 hours 42 minutes between second-to-last (8 o' clock) ETH.ETH migrate and last migrate
(freed by noop:novault transfer 12 seconds earlier))