ci: sync sample catalog from foundry-samples (main)

[sync-hosted-agent-sample-bot]

Summary

This automated draft PR updates samples/hosted-agent/sample-catalog.json by scanning
the microsoft-foundry/foundry-samples repository for hosted-agent sample templates.

What changed

• New templates added or removed based on the upstream repo structure.
• commitSha updated to the latest commit on main.
• requiresModel and protocol values re-derived from each sample's agent.yaml.
• PM-edited displayName and description values are preserved from the previous catalog.

Reviewer Checks

• Confirm new templates have correct language, framework, and protocol values.
• Fill in displayName and description for any new templates (empty by default).
• Confirm no PM-edited display fields were accidentally lost.

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