fix: Don't pollute outer programs #954

Job	Run time
test (ubuntu-latest, 26.3, false)	38s
test (ubuntu-latest, 27.2, false)	40s
test (ubuntu-latest, 28.2, false)	32s
test (ubuntu-latest, 29.2, false)	35s
test (macos-latest, 26.3, false)	2m 17s
test (macos-latest, 27.2, false)	5m 0s
test (macos-latest, 28.2, false)	4m 42s
test (macos-latest, 29.2, false)	2m 27s
test (windows-latest, 26.3, false)	2m 7s
test (windows-latest, 27.2, false)	1m 20s
test (windows-latest, 28.2, false)	57s
test (windows-latest, 29.2, false)	48s
test (ubuntu-latest, snapshot, true)	32s
test (macos-latest, snapshot, true)	1m 36s
test (windows-latest, snapshot, true)	1m 10s
	25m 21s

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