Add test for fastapi-route-discovery

[tomaisthorpe]

Summary by Aikido

Security Issues: 0	Quality Issues: 0	Resolved Issues: 0

🚀 New Features

• Added FastAPI route patching to wrap APIRoute request handlers.

⚡ Enhancements

• Imported FastAPI source during protect initialization to enable integration.
• Updated CI workflows and end-to-end matrix to use constraints.

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