ref(node): Vendor @fastify/otel

Vendors `@fastify/otel@0.18.1` into the SDK, removing the runtime
dependency. The source was converted from JavaScript to TypeScript with
minimal type annotations. The `ignorePaths` / `minimatch` code path was
removed as it is not used by the Sentry integration.

Closes #20162

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: nicohrubec

.oxlintrc.base.json

@@ -158,7 +158,8 @@
         "**/integrations/tracing/mongoose/vendored/**/*.ts",
         "**/integrations/tracing/amqplib/vendored/**/*.ts",
         "**/integrations/tracing/prisma/vendored/**/*.ts",
-        "**/integrations/tracing/graphql/vendored/**/*.ts"
+        "**/integrations/tracing/graphql/vendored/**/*.ts",
+        "**/integrations/tracing/fastify/vendored/**/*.ts"
       ],
       "rules": {
         "typescript/no-explicit-any": "off"

packages/node/package.json

@@ -73,7 +73,6 @@
     "@opentelemetry/instrumentation-pg": "0.66.0",
     "@opentelemetry/sdk-trace-base": "^2.6.1",
     "@opentelemetry/semantic-conventions": "^1.40.0",
-    "@fastify/otel": "0.18.0",
     "@sentry/core": "10.53.1",
     "@sentry/node-core": "10.53.1",
     "@sentry/opentelemetry": "10.53.1",

packages/node/src/integrations/tracing/fastify/index.ts

@@ -1,5 +1,5 @@
 import * as diagnosticsChannel from 'node:diagnostics_channel';
-import { FastifyOtelInstrumentation } from '@fastify/otel';
+import { FastifyOtelInstrumentation } from './vendored/instrumentation';
 import type { Instrumentation, InstrumentationConfig } from '@opentelemetry/instrumentation';
 import type { IntegrationFn, Span } from '@sentry/core';
 import {