fix resnet50_face metric (#3310)

* fix resnet50_face metric

* fix face rec model to_static bug

ppcls/configs/Face_Recognition/FaceRecognition_ArcFace_ResNet50.yaml

@@ -128,4 +128,4 @@ DataLoader:
 
 Metric:
   Eval:
-    - BestAccOnFiveDatasets: {}
+    - FaceAccOnFiveDatasets: {}

ppcls/engine/evaluation/face_recognition.py

@@ -66,8 +66,12 @@ def face_recognition_eval(engine, epoch_id=0):
                 [images_right, paddle.flip(images_right, axis=-1)], 0)
 
         with engine.auto_cast(is_eval=True):
-            out_left = engine.model(images_left)
-            out_right = engine.model(images_right)
+            if engine.is_rec:
+                out_left = engine.model(images_left, labels.reshape([-1, 1]))
+                out_right = engine.model(images_right, labels.reshape([-1, 1]))
+            else:
+                out_left = engine.model(images_left)
+                out_right = engine.model(images_right)
 
         # get features
         if engine.config["Global"].get("retrieval_feature_from",
@@ -149,4 +153,5 @@ def face_recognition_eval(engine, epoch_id=0):
     if engine.eval_metric_func is None:
         return -1
     # return 1st metric in the dict
-    return engine.eval_metric_func.avg
+    return engine.eval_metric_func.avg
+