`standalone/io/named_pipe_operations_test` is flaky

[derekxu16]

It is currently marked as flaky on the following configurations on the Current Results page:

vm-appjit-linux-debug-x64
vm-appjit-linux-release-x64
vm-linux-debug-ia32
vm-linux-debug-simriscv32
vm-linux-debug-x64
vm-linux-debug-x64c
vm-linux-release-ia32
vm-linux-release-x64
vm-appjit-linux-product-x64
vm-checked-mac-release-arm64
vm-eager-optimization-linux-release-x64
vm-linux-debug-simriscv64
vm-linux-release-arm64
vm-linux-release-simarm
vm-mac-release-arm64
vm-reload-rollback-linux-release-x64