✨ Add quantum teleportation benchmark

[denialhaag]

Description

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Add a fixed quantum teleportation benchmark with C++ and Python APIs, strict empty-parameter instance specifications and manifests, an analytic reference, command-line support, and structured MLIR generation.

The generated program preserves the source program's measurement-dependent X and Z corrections. A focused MLIR test protects the feed-forward order because the uniform analytic distribution cannot detect misplaced corrections.

This PR is stacked on #2402.

The existing unreleased benchmark-library changelog entry includes this PR.

AI notice

This PR and its contents were created with the assistance of GPT-5.6 Sol via Codex.

Checklist

• The pull request only contains commits that are focused and relevant to this change.
• I have added appropriate tests that cover the new/changed functionality.
• I have updated the documentation to reflect these changes.
• I have added entries to the changelog for any noteworthy additions, changes, fixes, or removals.
• I have added migration instructions to the upgrade guide (if needed).
• The changes follow the project's style guidelines and introduce no new warnings.
• The changes are fully tested and pass the CI checks.
• I have reviewed my own code changes.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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