Improve stdio test Windows compatibility and refactor command logic

[HoberMin]

Description

This PR improves the Windows compatibility of stdio tests and refactors the OS-specific command logic. The main changes include:

• Move OS-specific command logic from test file to implementation
• Add getDefaultServerParameters function for cross-platform support
• Use more command for Windows instead of tee
• Clean up test code structure

Motivation and Context

The stdio tests were not properly handling Windows environments, and the OS-specific logic was mixed in the test file. This PR improves code organization and cross-platform compatibility.

Type of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

How Has This Been Tested?

• Tested on Windows environment
• All existing tests pass
• Verified stdio functionality works correctly on both Windows and Unix/Linux

Checklist:

• My code follows the code style of this project
• I have updated the documentation accordingly
• I have added tests to cover my changes
• All new and existing tests passed