chore(sequencing): remove ConsensusMessage from stream_handler_test #8351

Job	Run time
build-papyrus-utilities-image	20s
executable-run	13m 8s
executable-run-no-rpc	12m 18s
integration-test	18m 38s
random-table-test	1m 28s
test-no-rpc	5m 45s
	51m 37s

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