feat(coprocessor): make multi-chain DB migration backwards compatible #1913

Job	Run time
kms-connector-docker-build	0s
coprocessor-docker-build	0s
host-contracts-docker-build	0s
gateway-contracts-docker-build	0s
test-suite-docker-build	0s
create-e2e-tests-input	0s
run-e2e-tests	-1s
	-1s

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