refactor(mainnet): xcm config #1526

Job	Run time
lint	5m 34s
api-tests	3m 43s
clippy	20m 21s
check-ismp	37m 48s
check	36m 13s
api-integration-tests (devnet)	23m 59s
clippy-ismp	19m 11s
coverage	56m 3s
api-integration-tests (testnet)	24m 35s
integration-tests (westend,devnet)	45m 47s
test	53m 5s
integration-tests (westend,testnet)	46m 19s
integration-tests (westend,mainnet)	46m 17s
	6h 58m 55s

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