fix: Don't pollute outer programs #962

Job	Run time
test (ubuntu-latest, 26.3, false)	1m 32s
test (ubuntu-latest, 27.2, false)	1m 25s
test (ubuntu-latest, 28.2, false)	1m 22s
test (ubuntu-latest, 29.2, false)	1m 28s
test (macos-latest, 26.3, false)	2m 51s
test (macos-latest, 27.2, false)	2m 36s
test (macos-latest, 28.2, false)	2m 43s
test (macos-latest, 29.2, false)	3m 4s
test (windows-latest, 26.3, false)	3m 38s
test (windows-latest, 27.2, false)	2m 35s
test (windows-latest, 28.2, false)	3m 4s
test (windows-latest, 29.2, false)	2m 33s
test (ubuntu-latest, snapshot, true)	1m 16s
test (macos-latest, snapshot, true)	2m 38s
test (windows-latest, snapshot, true)	1m 1s
	33m 46s

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