Tests

Fix Windows integration test for background jobs #1339

Job	Run time
graalvm-build	4m 31s
jvm-integration-test (windows-latest, 24)	5m 58s
jvm-integration-test (macos-latest, 24)	7m 16s
unit-test (macos-latest, 24)	2m 0s
unit-test (ubuntu-24.04, 24)	55s
jvm-integration-test (ubuntu-24.04, 24)	3m 31s
unit-test (windows-latest, 24)	2m 6s
nix-build	7m 8s
graalvm-integration-test	1m 5s
	34m 30s

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