Enhance computation of system-package provided by a ExecutionEnvironment #401

Job	Run time
check-freeze-period / verify-freeze-period	1s
build / Upload Event File	3s
check-merge-commits / Block Merge Commits	11s
build / Verify Linux	9m 6s
build / Verify Windows	9m 14s
build / Verify MacOS	8m 55s
	27m 30s

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