Describe the bug

Swift Subprocess library hangs indefinitely when built in release configuration, while working correctly in debug configuration. The Subprocess.run() call never completes when running a simple ls command in release builds.

To Reproduce
What executable was running? ls
2. What arguments are passed in? No arguments (just ls)
3. What environment values are used? Default environment

Code example:

let result = try await Subprocess.run(.name("ls"), output: .string(limit: 4096))

I reproduced this issue here: https://github.com/kattouf/swift-subprocess-hang-report

Expected behavior
The Subprocess.run() call should complete successfully and return the process result with output, process identifier, and termination status.

Environment (please complete the following information):

• OS macOS - 15
• Swift version - swift-driver version: 1.120.5 Apple Swift version 6.1.2 (swiftlang-6.1.2.1.2 clang-1700.0.13.5)
  Target: arm64-apple-macosx15.0

Additional context
I reproduced this issue with both release 0.1.0 and the main branch.