feat: Add API response for Gen AI Evaluation in Tuning

PiperOrigin-RevId: 799629722

Author: Google APIs

google/cloud/aiplatform/v1beta1/tuning_job.proto

@@ -653,6 +653,10 @@ message EvaluateDatasetRun {
   // when evaluating checkpoints.
   string checkpoint_id = 2 [(google.api.field_behavior) = OUTPUT_ONLY];
 
+  // Output only. Results for EvaluationService.EvaluateDataset.
+  EvaluateDatasetResponse evaluate_dataset_response = 3
+      [(google.api.field_behavior) = OUTPUT_ONLY];
+
   // Output only. The error of the evaluation run if any.
   google.rpc.Status error = 4 [(google.api.field_behavior) = OUTPUT_ONLY];
 }