`dd-trace` cannot propagate `x-datadog-*` header when Mock Service Worker (MSW) is activated

[Chanki-Min]

dd-trace seems like not working well with MSW library, that used with many companies to make mocked response

Expected behaviour

dd-trace should be able to catch outgoing http.request. And add x-datadog-* headers to be able to track Distributed Tracing

Actual behaviour

When MSW (Mock Service Worker) is enabled in Node.js Server with bypass mode (bypasses request that do not match with mocking handers), bypassed outgoing request is not captured by dd-trace. and x-datadog-* header is not attached

Steps to reproduce I made reproduction repository. Please clone that repository and follow reproduction steps in README.md

Environment

• Operation system:: Ubuntu 20.04 or Mac OS 13.2.1
• Node.js version: 18.16.0
• Tracer version: 4.3.0
• Agent version: Does not important (This issue is not related to Agent Version)
• Relevant library versions: Next.js 13.4.1, MSW 1.2.2, Axios 1.36.0

Package.json is in reproduction repository

[kettanaito]

Let me know if I can help in any way. I don't expect this to be an issue in MSW/Interceptors but ping me if it is.