Enable NonValidatingReloadOnNormalReload on variations testing

testing/variations/fieldtrial_testing_config_mac.json

 {
     "AutofillClassifier": [
         {
             "group_name": "Enabled"
         }
     ],
     "AutofillFieldMetadata": [
         {
             "group_name": "Enabled"
         }
@@ skipping 147 matching lines @@
         }
     ],
     "NewAudioRenderingMixingStrategy": [
         {
             "enable_features": [
                 "NewAudioRenderingMixingStrategy"
             ],
             "group_name": "Enabled"
         }
     ],
+    "NonValidatingReloadOnNormalReload": [
+        {
+            "enable_features": [
+                "NonValidatingReloadOnNormalReload"
+            ],
+            "group_name": "Enabled"
+        }
+    ],
     "OfferUploadCreditCards": [
         {
             "group_name": "Enabled"
         }
     ],
     "OutOfProcessPac": [
         {
             "group_name": "Enabled"
         }
     ],
@@ skipping 246 matching lines @@
     ],
     "use-new-media-cache": [
         {
             "enable_features": [
                 "use-new-media-cache"
             ],
             "group_name": "Enabled"
         }
     ]
 }