Enable API stub generation for agent server core

[Shiva S (Shivakishore14)]

Description

Enables the API stub generation check for azure-ai-agentserver-core now that generic task classes are handled successfully on the Python 3.10 CI path.

Validation

• API stub generation with Python 3.10 CI-equivalent options
• Pylint
• MyPy
• Pyright
• Wheel installation and package tests

[azure-pipelines]

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[Shiva S (Shivakishore14)]

CI failure analysis

Build 6668772 failed only in verifywhl. azure-ai-agentserver-core has a stable version on PyPI, but its pyproject.toml does not contain the newly required [tool.azure-sdk-conda] metadata.

This is independent of enabling API stub generation; the API stub job and all platform tests passed. The fix is to declare that this package is not part of a Conda bundle:

[tool.azure-sdk-conda]
in_bundle = false

[azure-pipelines]

Azure Pipelines:
Successfully started running 1 pipeline(s).
10 pipeline(s) were filtered out due to trigger conditions.
There may be pipelines that require an authorized user to comment /azp run to run.

[Copilot]

Pull request overview

Enables API stub validation for azure-ai-agentserver-core.

Changes:

• Enables the apistub build check.
• Marks the package as excluded from the Conda bundle.