test(node): Port Postgres integration tests to span streaming (#25140)

Port Postgres and Postgres.js tests to default span streaming,
preserving assertions and folding in their streaming counterparts.

Closes #24137

---------

Co-authored-by: GPT-6 <codex@openai.com>

Author: nicohrubec

dev-packages/bun-integration-tests/node-suites/excludes.ts

@@ -126,9 +126,7 @@ export const NO_AUTO_INSTRUMENTATION = [
   'suites/tracing/openai/v7/test.ts',
   'suites/tracing/orchestrion-lazy-registration/test.ts',
   'suites/tracing/pi-durable/test.ts',
-  'suites/tracing/postgres-streamed/test.ts',
   'suites/tracing/postgres/test.ts',
-  'suites/tracing/postgresjs-streamed/test.ts',
   'suites/tracing/postgresjs/test.ts',
   'suites/tracing/prisma-orm-v5/test.ts',
   'suites/tracing/prisma-orm-v6/test.ts',