chore(papyrus_p2p_sync): create internal blocks channel structs #7968

Job	Run time
executable-run	12m 20s
executable-run-no-rpc	11m 45s
integration-test	26m 40s
test-no-rpc	6m 35s
build-papyrus-utilities-image	16s
random-table-test	1m 35s
	59m 11s

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