refactor(consensus): replace Notify with CancellationToken #8360

Job	Run time
executable-run	12m 8s
build-papyrus-utilities-image	22s
executable-run-no-rpc	11m 37s
integration-test	18m 23s
random-table-test	1m 33s
test-no-rpc	6m 47s
	50m 50s

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