Fix `SplitArtifacts=` to not split extra artifacts #10028

Job	Run time
unit-test	1m 25s
integration-test (arch, arch)	27m 45s
integration-test (arch, debian)	31m 46s
integration-test (arch, fedora)	30m 21s
integration-test (azure, arch)	15m 43s
integration-test (azure, debian)	15m 33s
integration-test (azure, fedora)	15m 40s
integration-test (azure, ubuntu)	15m 27s
integration-test (centos, arch)	21m 12s
integration-test (centos, debian)	23m 34s
integration-test (azure, opensuse)	16m 30s
integration-test (centos, fedora)	23m 9s
integration-test (centos, opensuse)	23m 29s
integration-test (centos, ubuntu)	23m 16s
integration-test (debian, arch)	22m 28s
integration-test (debian, debian)	23m 26s
integration-test (debian, fedora)	23m 17s
integration-test (debian, ubuntu)	23m 44s
integration-test (fedora, arch)	23m 20s
integration-test (fedora, debian)	25m 40s
integration-test (fedora, fedora)	24m 14s
integration-test (fedora, opensuse)	24m 50s
integration-test (fedora, ubuntu)	25m 16s
integration-test (opensuse, arch)	2m 54s
integration-test (opensuse, debian)	24m 1s
integration-test (opensuse, fedora)	3m 22s
integration-test (opensuse, opensuse)	22m 48s
integration-test (opensuse, ubuntu)	24m 13s
integration-test (ubuntu, arch)	23m 14s
integration-test (ubuntu, debian)	23m 24s
integration-test (ubuntu, fedora)	24m 14s
integration-test (ubuntu, ubuntu)	23m 39s
	11h 12m 54s

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