node-integration-tests: port HTTP and outgoing request suites to span streaming

Follow the porting recipe in the parent issue.

Highest churn group, because `http.server` and `http.client` span names became low cardinality. Do this one first, since the other groups inherit its patterns.

## Suites

* `tracing/requests/*` (15 dirs)
* `tracing/http-client-spans/*` (8 dirs)
* `tracing/httpIntegration`
* `tracing/tracePropagationTargets` and `tracing/tracePropagationTargets/baggage-org-id`
* `proxy`
* `ipv6`

## Twins to fold back

* `tracing/httpIntegration-streamed` into `tracing/httpIntegration`
* `tracing/http-client-spans/fetch-basic-streamed` into `tracing/http-client-spans/fetch-basic`

`tracing/http-client-span-streamed`, `tracing/httpServerSpans-streamed-unrouted` and `tracing/requestData-streamed` have no static original. Rename them to drop the `-streamed` suffix once nothing collides.

Start with the parent issue's porting recipe, then inspect the listed tracing, proxy, and ipv6 suites and their streamed twins. Follow the recipe across the named directories, fold back the two specified twins, and rename the three streamed-only suites when there are no collisions. Done means the listed HTTP and outgoing-request suites are ported consistently without duplicate suite names.

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