Port deno-integration-tests suites to span streaming

[msonnb]

Split out of #23812, which ported the Deno E2E apps (deno, deno-mysql, deno-pg, deno-redis) to span streaming in #24002 and #24003.

The dev-packages/deno-integration-tests suites still carry the traceLifecycle: 'static' pin from #22590: 25 suites, 51 pins, mostly the orchestrion-* suites plus deno-serve-request-bodies.

Why this is separate

These suites don't go through the event proxy. They assert via a transactionSink() helper wired into beforeSendTransaction in dev-packages/deno-integration-tests/src/index.ts, so porting them is a harness change, not a spec rewrite:

• Replace the beforeSendTransaction sink with a span sink (e.g. beforeSendSpan or a mock transport capturing span v2 envelopes).
• Rewrite the per-suite assertions from transaction.spans[] / contexts.trace to streamed span shape (span.name, getSpanOp, span.attributes['x'].value, is_segment).
• Streamed db/http/gen_ai span names are low cardinality, so every name assertion in the orchestrion suites changes.

What to do

1. Add a streamed-span sink to src/index.ts next to transactionSink().
2. Remove the traceLifecycle: 'static' pins from every suites/**/test.ts.
3. Rewrite the assertions per suite.

Consider keeping one suite on the static pin (or duplicating one) so the static trace lifecycle stays covered for this harness, mirroring the *-static E2E apps.

[linear-code]

JS-3559