Fix `XcmPaymentApi::query_weight_to_asset_fee` version conversion #14928

Job	Run time
preflight / preflight	43s
preflight / ci-versions	1m 5s
check-runtime-migration (westend)	9m 26s
check-runtime-migration (asset-hub-westend)	5m 52s
check-runtime-migration (bridge-hub-westend)	5m 12s
check-runtime-migration (collectives-westend)	5m 11s
check-runtime-migration (coretime-westend)	5m 25s
All runtime migrations passed	1s
	32m 55s

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