testfix, state switchable by default

com.unity.perception/Runtime/Randomization/Randomizers/Randomizer.cs

         /// Some Randomizers should not be disabled by the user as they are critical to the project. E.g. We might want to mark this as false for a foreground objects placement randomizer in some projects
         /// </summary>
         [field: SerializeField]
-        public bool enabledStateCanBeSwitchedByUser { get; set; }
+        public bool enabledStateCanBeSwitchedByUser { get; set; } = true;
 
         /// <summary>
         /// Returns the scenario containing this Randomizer

com.unity.perception/Runtime/Randomization/Scenarios/Serialization/ScenarioSerializer.cs

         static void DeserializeRandomizer(Randomizer randomizer, Group randomizerData)
         {
             randomizer.enabled = randomizerData.state.enabled;
+            randomizer.enabledStateCanBeSwitchedByUser = randomizerData.state.canBeSwitchedByUser;
 
             foreach (var pair in randomizerData.items)
             {

com.unity.perception/Tests/Runtime/Randomization/ScenarioTests/Resources/SampleScenarioConfiguration.json

                 }
               }
             }
-          },
-          "enabledStateCanBeSwitchedByUser": {
-            "scalar": {
-              "metadata": {
-                "name": "",
-                "description": "",
-                "imageLink": ""
-              },
-              "value": {
-                "bool": true
-              }
-            }
           }
         }
       }