fix: Fix prefab tests failing on trunk (#2458)

Author: ShadauxCat

com.unity.netcode.gameobjects/Tests/Editor/NetworkManagerConfigurationTests.cs

@@ -125,6 +125,11 @@ public void WhenNetworkConfigContainsOldPrefabList_TheyMigrateProperlyToTheNewLi
             var overridingTargetPrefab = new GameObject("Overriding Target Prefab").AddComponent<NetworkObject>();
             var sourcePrefabToOverride = new GameObject("Overriding Source Prefab").AddComponent<NetworkObject>();
 
+            regularPrefab.GlobalObjectIdHash = 1;
+            overriddenPrefab.GlobalObjectIdHash = 2;
+            overridingTargetPrefab.GlobalObjectIdHash = 3;
+            sourcePrefabToOverride.GlobalObjectIdHash = 4;
+
             networkConfig.OldPrefabList = new List<NetworkPrefab>();
             networkConfig.OldPrefabList.Add(new NetworkPrefab { Prefab = regularPrefab.gameObject });
             networkConfig.OldPrefabList.Add(new NetworkPrefab { Prefab = overriddenPrefab.gameObject, Override = NetworkPrefabOverride.Prefab, OverridingTargetPrefab = overridingTargetPrefab.gameObject, SourcePrefabToOverride = sourcePrefabToOverride.gameObject, SourceHashToOverride = 123456 });
@@ -166,6 +171,10 @@ public void WhenModifyingPrefabListUsingNetworkManagerAPI_ModificationIsLocal()
             var object2 = new GameObject("Object 2").AddComponent<NetworkObject>();
             var object3 = new GameObject("Object 3").AddComponent<NetworkObject>();
 
+            object1.GlobalObjectIdHash = 1;
+            object2.GlobalObjectIdHash = 2;
+            object3.GlobalObjectIdHash = 3;
+
             var sharedList = ScriptableObject.CreateInstance<NetworkPrefabsList>();
             sharedList.List.Add(new NetworkPrefab { Prefab = object1.gameObject });
 
@@ -208,6 +217,10 @@ public void WhenModifyingPrefabListUsingPrefabsAPI_ModificationIsLocal()
             var object2 = new GameObject("Object 2").AddComponent<NetworkObject>();
             var object3 = new GameObject("Object 3").AddComponent<NetworkObject>();
 
+            object1.GlobalObjectIdHash = 1;
+            object2.GlobalObjectIdHash = 2;
+            object3.GlobalObjectIdHash = 3;
+
             var sharedList = ScriptableObject.CreateInstance<NetworkPrefabsList>();
             sharedList.List.Add(new NetworkPrefab { Prefab = object1.gameObject });
 
@@ -250,6 +263,10 @@ public void WhenModifyingPrefabListUsingPrefabsListAPI_ModificationIsShared()
             var object2 = new GameObject("Object 2").AddComponent<NetworkObject>();
             var object3 = new GameObject("Object 3").AddComponent<NetworkObject>();
 
+            object1.GlobalObjectIdHash = 1;
+            object2.GlobalObjectIdHash = 2;
+            object3.GlobalObjectIdHash = 3;
+
             var sharedList = ScriptableObject.CreateInstance<NetworkPrefabsList>();
             sharedList.List.Add(new NetworkPrefab { Prefab = object1.gameObject });