[http-client-python] Preserve custom fields when migrating from setup.py to pyproject.toml#3231

msyyc wants to merge 4 commits intomainAzure/autorest.python:mainfrom

auto-microsoft-copilot/fix-693fde59-8e8e-4f46-ac31-090e6f2731c7Azure/autorest.python:auto-microsoft-copilot/fix-693fde59-8e8e-4f46-ac31-090e6f2731c7Copy head branch name to clipboard