Add conda release metadata

[cRui861]

Description

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All SDK Contribution checklist:

• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.

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• Title of the pull request is clear and informative.
• There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, see this page.

Testing Guidelines

• Pull request includes test coverage for the included changes.

[Copilot]

Pull request overview

Adds the standard Conda release metadata block to the azure-batch package’s pyproject.toml, enabling repository tooling to determine whether the package should be bundled or released individually on Conda.

Changes:

• Add [tool.azure-sdk-conda] section to sdk/batch/azure-batch/pyproject.toml.
• Set in_bundle = false for azure-batch.