XCM executor: refund unused swapped fees #17201

Job	Run time
isdraft / isdraft	1s
preflight / preflight	7s
preflight / ci-versions	1m 8s
build-test-parachain	9m 11s
build-linux-stable-cumulus	12m 30s
build-linux-stable	12m 4s
build-linux-substrate	7m 35s
build-malus	10m 8s
build-test-collators	11m 10s
prepare-bridges-zombienet-artifacts	9m 45s
prepare-polkadot-zombienet-artifacts	8m 47s
prepare-cumulus-zombienet-artifacts	2m 41s
build-push-image-substrate-pr	52s
build-push-image-test-parachain	55s
build-push-image-malus	2m 12s
build-push-image-colander	2m 17s
build-push-image-polkadot-debug	2m 17s
build-push-image-polkadot-parachain-debug	1m 8s
build-push-image-bridges-zombienet-tests	4m 26s
	1h 39m 14s

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