fix: address Code Reviewer findings for Datadog/Sentry integration FRE-4806

P1: Load dd-trace before other modules via datadog-init.ts entry point
P1: Batch all CloudWatch metrics into single PutMetricDataCommand per request
P2: Deduplicate warning logs with else-if for high latency vs error
P3: Add response.ok check to Datadog log forwarding fetch
P3: Update getSentryHub() to use getCurrentScope() for Sentry SDK 8.x

Co-Authored-By: Paperclip <noreply@paperclip.ing>

packages/monitoring/package.json

@@ -18,6 +18,7 @@
     "typescript": "^5.7.0"
   },
   "exports": {
-    ".": "./src/index.ts"
+    ".": "./src/index.ts",
+    "./datadog-init": "./src/datadog-init.ts"
   }
 }