[typespec-python] Regenerate tests from microsoft/typespec@main

[github-actions]

GitHub Actions is not permitted to create pull requests in this repository, so this issue tracks the regeneration instead.

Click the link below to open a pre-filled PR:

👉 Create pull request from regen/typespec-python-main

Details:

• Source: microsoft/typespec@main
• Branch: regen/typespec-python-main
• Latest workflow run: https://github.com/Azure/azure-sdk-for-python/actions/runs/27075498059

Note: the PR targets the typespec-python-generated-tests branch, so merging it will not auto-close this issue. Please close this issue manually after the PR is merged.

cc @iscai-msft @msyyc