[AAASM-4725] 📝 (examples): Fix stale rc.3 rationale comment on the SDK pin

[Chisanan232]

What changed

Corrects a stale rationale comment in python/microsoft-agent-framework-tool-policy/pyproject.toml. The SDK pin is already correct (agent-assembly==0.0.1rc5), but the WHY-comment above it still said "0.0.1rc3 remains the latest installable version on PyPI" — written before rc.4/rc.5 shipped, so it contradicted its own pin. One-token fix (rc3 → rc5); no pin change, no behavior change.

Related ticket

Closes AAASM-4725

How to verify

• git diff shows a single comment-line change; the pin agent-assembly==0.0.1rc5 is untouched.
• Running the metadata generator produces no new changes (the comment is not a version-bearing surface); --check stays exit 0; the 32 generator unit tests still pass.

Checklist

• PR title follows [AAASM-XXXX] <GitEmoji> (<scope>): <summary>
• No secrets, API keys, or .env files committed
• Example sub-projects include their own README.md (unchanged)
• SDK/runtime version dependencies are documented or pinned (this corrects the pin's rationale comment)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Chisanan232]

Review (AAASM-4725) — READY.

• CI: all checks green (25) and the SonarCloud quality gate passed; the metadata drift-check is green (confirms the generator stays idempotent).
• Scope: covers the ticket exactly — the stale rationale comment now reads rc.5 (matching the already-correct pin). One-line change.
• Side effects: none. The changed-files list is a single file, +1/-1, and it's a comment line only; the pin agent-assembly==0.0.1rc5 is untouched, so nothing about dependency resolution, the generator, or CI behavior changes. No existing function or business logic affected.
• Front end: none — a Python manifest comment, so Playwright validation is not applicable.

Base master; awaiting Pioneer review — not merged.

— Reviewed by Claude Code