[5.10] Fix test runner build on WASI#7351

MaxDesiatov merged 1 commit intoswiftlang:release/5.10swiftlang/swift-package-manager:release/5.10from

kateinoigakukun:yt/cherry-pick-5.10-wasi-test-runnerkateinoigakukun/swift-package-manager:yt/cherry-pick-5.10-wasi-test-runnerCopy head branch name to clipboard