refactor(consensus): replace Notify with CancellationToken #8375

Job	Run time
executable-run	12m 23s
build-papyrus-utilities-image	18s
executable-run-no-rpc	12m 58s
integration-test	18m 0s
random-table-test	2m 27s
test-no-rpc	7m 12s
	53m 18s

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