xcm: fix for DenyThenTry Barrier #19535

Job	Run time
preflight / preflight	41s
preflight / preflight	41s
preflight / ci-versions	59s
preflight / ci-versions	59s
check-runtime-migration (westend)	8m 23s
check-runtime-migration (westend)	8m 23s
check-runtime-migration (asset-hub-westend)	6m 23s
check-runtime-migration (asset-hub-westend)	6m 23s
check-runtime-migration (bridge-hub-westend)	5m 1s
check-runtime-migration (bridge-hub-westend)	4m 16s
check-runtime-migration (collectives-westend)	5m 39s
check-runtime-migration (collectives-westend)	5m 39s
check-runtime-migration (coretime-westend)	5m 52s
check-runtime-migration (coretime-westend)	5m 52s
All runtime migrations passed	3s
All runtime migrations passed	1s
	1h 5m 15s

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