fix: Don't pollute outer programs #954

Job	Run time
test (ubuntu-latest, 26.3, false)	26s
test (ubuntu-latest, 27.2, false)	33s
test (ubuntu-latest, 28.2, false)	25s
test (ubuntu-latest, 29.2, false)	38s
test (macos-latest, 26.3, false)	1m 33s
test (macos-latest, 27.2, false)	1m 50s
test (macos-latest, 28.2, false)	1m 32s
test (macos-latest, 29.2, false)	1m 47s
test (windows-latest, 26.3, false)	1m 41s
test (windows-latest, 27.2, false)	55s
test (windows-latest, 28.2, false)	50s
test (windows-latest, 29.2, false)	1m 4s
test (ubuntu-latest, snapshot, true)	25s
test (macos-latest, snapshot, true)	1m 28s
test (windows-latest, snapshot, true)	47s
	15m 54s

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