fix: type propagation

[climba03003]

Refs: https://github.com/fastify/fastify-type-provider-typebox/issues/5

Checklist

• [x] run npm run test and npm run benchmark
• [x] tests and/or benchmarks are included
• [ ] documentation is changed or added
• [x] commit message and code follows the Developer's Certification of Origin and the Code of conduct