fix(remix): Wrap handleDocumentRequest functions.

[onurtemizkan]

Fixes: #5362

We're currently wrapping action and loader functions of Remix routes for tracing and error capturing.

When testing the case in #5362, I realized the render function of a SSR component in Remix has another handler
handleDocumentRequest which doesn't re-throw internal errors so we can't catch them in wrapRequestHandler.

Also added a tracing span for handleDocumentRequest.

Note: This is also the case with resource requests. Maybe we need to wrap them as well? 👇

handleResourceRequest is not passed as a parameter to createRequestHandler (that's how we currently access the handlers to wrap). It also only runs action or loader functions, which are already instrumented. So the errors are captured on action/loader level.

[AbhiPrasad]

I think we can also try wrapping resource requests. I will update the main tracking GH issue accordingly.

will review in a bit!