Tests

support /fork command #1283

Job	Run time
graalvm-build	4m 42s
jvm-integration-test (ubuntu-24.04, 24)	3m 13s
unit-test (ubuntu-24.04, 24)	5m 18s
jvm-integration-test (macos-latest, 24)	6m 23s
unit-test (windows-latest, 24)	5m 57s
unit-test (macos-latest, 24)	6m 35s
jvm-integration-test (windows-latest, 24)	5m 40s
graalvm-integration-test	1m 5s
nix-build	11m 44s
	50m 37s

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