Enhance computation of system-package provided by a ExecutionEnvironment #399

Job	Run time
check-merge-commits / Block Merge Commits	7s
check-freeze-period / verify-freeze-period	2s
build / Verify Linux	8m 18s
build / Verify Windows	15m 25s
build / Verify MacOS	13m 2s
build / Upload Event File	2s
	36m 56s

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