fix: `cycleHash` should represent a cycle starting block of the signing quorum #1916

Job	Run time
Build container / Build container	21s
arm-linux-gnueabihf / Build depends	1m 3s
x86_64-pc-linux-gnu_multiprocess / Build depends	1m 8s
x86_64-pc-linux-gnu / Build depends	1m 4s
x86_64-pc-linux-gnu_nowallet / Build depends	1m 3s
x86_64-apple-darwin / Build depends	1m 2s
x86_64-w64-mingw32 / Build depends	57s
win64-build / Build source	31m 22s
mac-build / Build source	23m 37s
linux64_nowallet-build / Build source	18m 10s
arm-linux-build / Build source	21m 2s
linux64_sqlite-build / Build source	19m 24s
linux64-build / Build source	17m 44s
linux64_fuzz-build / Build source	17m 36s
linux64_ubsan-build / Build source	31m 17s
linux64_multiprocess-build / Build source	52m 28s
linux64_tsan-build / Build source	28m 42s
linux64-test / Test source	33m 9s
linux64_nowallet-test / Test source	13m 27s
linux64_sqlite-test / Test source	28m 52s
linux64_ubsan-test / Test source	32m 33s
	6h 16m 1s

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