[STF] Safrole gamma_s uses eta_3' instead of eta_2'

[ggwpez]

Around here, there should be the state for the current seal key series gamma_s. Gamma s is to be updated in this transition to the fallback series - which happens correctly.

jamtestnet/data/fallback/state_transitions/1_000.json

Line 36 in f51fb20

"0x0400000000000000000000000000000000000000000000000000000000000000",

However, the GrayMatter client arrives at a different seal key series. As comparison:

Colorful Nation gamma_s'

[
	"AA2B95F7572875B0D0F186552AE745BA8222FC0B5BD456554BFE51C68938F8BC",
	"5E465BEB01DBAFE160CE8216047F2155DD0569F058AFD52DCEA601025A8D161D",
	"48E5FCDCE10E0B64EC4EEBD0D9211C7BAC2F27CE54BCA6F7776FF6FEE86AB3E3",
	"3D5E5A51AAB2B048F8686ECD79712A80E3265A114CC73F14BDB2A59233FB66D0",
	"3D5E5A51AAB2B048F8686ECD79712A80E3265A114CC73F14BDB2A59233FB66D0",
	"5E465BEB01DBAFE160CE8216047F2155DD0569F058AFD52DCEA601025A8D161D",
	"F16E5352840AFB47E206B5C89F560F2611835855CF2E6EBAD1ACC9520A72591D",
	"3D5E5A51AAB2B048F8686ECD79712A80E3265A114CC73F14BDB2A59233FB66D0",
	"AA2B95F7572875B0D0F186552AE745BA8222FC0B5BD456554BFE51C68938F8BC",
	"AA2B95F7572875B0D0F186552AE745BA8222FC0B5BD456554BFE51C68938F8BC",
	"3D5E5A51AAB2B048F8686ECD79712A80E3265A114CC73F14BDB2A59233FB66D0",
	"48E5FCDCE10E0B64EC4EEBD0D9211C7BAC2F27CE54BCA6F7776FF6FEE86AB3E3"
]

GrayMatter gamma_s'

[
	"48E5FCDCE10E0B64EC4EEBD0D9211C7BAC2F27CE54BCA6F7776FF6FEE86AB3E3",
	"48E5FCDCE10E0B64EC4EEBD0D9211C7BAC2F27CE54BCA6F7776FF6FEE86AB3E3",
	"48E5FCDCE10E0B64EC4EEBD0D9211C7BAC2F27CE54BCA6F7776FF6FEE86AB3E3",
	"F16E5352840AFB47E206B5C89F560F2611835855CF2E6EBAD1ACC9520A72591D",
	"5E465BEB01DBAFE160CE8216047F2155DD0569F058AFD52DCEA601025A8D161D",
	"48E5FCDCE10E0B64EC4EEBD0D9211C7BAC2F27CE54BCA6F7776FF6FEE86AB3E3",
	"5E465BEB01DBAFE160CE8216047F2155DD0569F058AFD52DCEA601025A8D161D",
	"48E5FCDCE10E0B64EC4EEBD0D9211C7BAC2F27CE54BCA6F7776FF6FEE86AB3E3",
	"3D5E5A51AAB2B048F8686ECD79712A80E3265A114CC73F14BDB2A59233FB66D0",
	"5E465BEB01DBAFE160CE8216047F2155DD0569F058AFD52DCEA601025A8D161D",
	"3D5E5A51AAB2B048F8686ECD79712A80E3265A114CC73F14BDB2A59233FB66D0",
	"48E5FCDCE10E0B64EC4EEBD0D9211C7BAC2F27CE54BCA6F7776FF6FEE86AB3E3"
]

I think I know what is wrong in your client, as since when I switched my code to use eta_3' here instead of eta_2', then i arrive at that same sequence. But it should be eta_2', see https://graypaper.fluffylabs.dev/#/5f542d7/0e92020e9602

[ggwpez]

LGTM, thanks!