Add utility to skip tests based on host architecture

[RevanthGundala]

Description

Fixes #2276

This PR introduces a utility module (python/tests/utils/arch.py) that allows tests to be conditionally skipped based on the host architecture (e.g., x86_64, aarch64). This addresses the need for a portable, maintainable way to prevent platform-specific test failures.

This change does not alter any test behavior by default, but provides a clear and reusable mechanism for future architecture-specific test requirements.

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[schweitzpgi]

Were you planning to deploy this in some test(s) in particular?