chore(api-nodes): add upcoming-deprecation notice to Sora nodes

[bigcat88]

API Node PR Checklist

Scope

• Is API Node Change

Pricing & Billing

• Need pricing update
• No pricing update

If Need pricing update:

• Metronome rate cards updated
• Auto‑billing tests updated and passing

QA

• QA done
• QA not required

Comms

• Informed Kosinkadink

[coderabbitai]

📝 Walkthrough

Walkthrough

The Sora v2 node's metadata is updated to reflect its deprecation status. The display name is modified to include a (Deprecated) label, and the description is expanded to inform users that the Sora v2 API service will cease operation in September 2026, with the corresponding node being removed from ComfyUI at that time. The underlying implementation remains unchanged.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: adding a deprecation notice to Sora nodes.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description check	✅ Passed	The pull request description is related to the changeset - it's a checklist template for API node changes, and the PR is about adding a deprecation notice to Sora nodes.

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