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/src/datadog-logs.ts

@@ -24,7 +24,7 @@ export function initDatadogLogs() {
           service,
         });
 
-        await fetch(`${logIntakeUrl}/api/v2/logs`, {
+        const response = await fetch(`${logIntakeUrl}/api/v2/logs`, {
           method: 'POST',
           headers: {
             'DD-API-KEY': process.env.DD_API_KEY!,
@@ -32,6 +32,12 @@ export function initDatadogLogs() {
           },
           body: payload,
         });
+        if (!response.ok) {
+          console.warn(
+            `[Datadog Logs] HTTP ${response.status} response from intake API`,
+            await response.text()
+          );
+        }
       } catch (err) {
         console.warn('[Datadog Logs] Forward failed:', (err as Error).message);
       }