Add pip install test workflow with Apptainer and rank matrix

[mawad-amd]

Motivation

Additional testing for the package.

Technical Details

Add tests for installing via pip install git+

Test Plan

Test Result

Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[Copilot]

Pull Request Overview

This PR adds a new CI workflow for testing pip installation of the Iris package using Apptainer containers. The workflow validates that the package can be successfully installed via pip install git+ and that distributed tests work correctly across different rank configurations.

Key changes:

• Enhanced error handling in the distributed test runner to properly propagate test failures
• Added comprehensive pip install testing workflow with multi-rank matrix testing

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
tests/run_tests_distributed.py	Improved error handling to ensure test failures are properly propagated to the main process
.github/workflows/iris-pip-install-test.yml	New GitHub Actions workflow for testing pip installation with Apptainer and multiple rank configurations