Simplify OTLP response validation test

Just check if JSON and Protobuf spans reach Datadog.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: jchrostek-dd

integration-tests/tests/otlp.test.ts

@@ -96,43 +96,17 @@ describe('OTLP Integration Tests', () => {
   });
 
   describe('OTLP Response Validation (SVLS-8626)', () => {
-    it('should invoke response-validation Lambda successfully', () => {
-      expect(results.responseValidation.statusCode).toBe(200);
-    });
-
-    it('should accept JSON encoded OTLP traces', () => {
-      const body = JSON.parse(results.responseValidation.payload?.body || '{}');
-      expect(body.json?.success).toBe(true);
-    });
-
-    it('should accept Protobuf encoded OTLP traces', () => {
-      const body = JSON.parse(results.responseValidation.payload?.body || '{}');
-      expect(body.protobuf?.success).toBe(true);
-    });
-
-    it('should send at least one trace to Datadog', () => {
-      expect(results.responseValidation.traces?.length).toBeGreaterThan(0);
-    });
-
     it('should have JSON encoded span in Datadog', () => {
-      const body = JSON.parse(results.responseValidation.payload?.body || '{}');
-      const requestId = body.requestId;
       const allSpans = results.responseValidation.traces?.flatMap(t => t.spans) || [];
-      const currentRunSpans = allSpans.filter(s => s.attributes?.custom?.request_id === requestId);
-
-      const hasJsonSpan = currentRunSpans.some(s =>
+      const hasJsonSpan = allSpans.some(s =>
         s.attributes?.resource_name === 'test-span-json' && s.attributes?.custom?.encoding === 'json'
       );
       expect(hasJsonSpan).toBe(true);
     });
 
     it('should have Protobuf encoded span in Datadog', () => {
-      const body = JSON.parse(results.responseValidation.payload?.body || '{}');
-      const requestId = body.requestId;
       const allSpans = results.responseValidation.traces?.flatMap(t => t.spans) || [];
-      const currentRunSpans = allSpans.filter(s => s.attributes?.custom?.request_id === requestId);
-
-      const hasProtobufSpan = currentRunSpans.some(s =>
+      const hasProtobufSpan = allSpans.some(s =>
         s.attributes?.resource_name === 'test-span-protobuf' && s.attributes?.custom?.encoding === 'protobuf'
       );
       expect(hasProtobufSpan).toBe(true);