Remove IoC resolves in BaseNetConnectorNodeGroup and friends (#20333)

Content.Server/Power/NodeGroups/BaseNetConnectorNodeGroup.cs

@@ -6,29 +6,33 @@ namespace Content.Server.Power.NodeGroups
 {
     public abstract class BaseNetConnectorNodeGroup<TNetType> : BaseNodeGroup
     {
+        protected IEntityManager EntMan = default!;
+
+        public override void Initialize(Node sourceNode, IEntityManager entMan)
+        {
+            base.Initialize(sourceNode, entMan);
+            EntMan = entMan;
+        }
+
         public override void LoadNodes(List<Node> groupNodes)
         {
             base.LoadNodes(groupNodes);
-            var entManager = IoCManager.Resolve<IEntityManager>();
 
             foreach (var node in groupNodes)
             {
-                var newNetConnectorComponents = new List<IBaseNetConnectorComponent<TNetType>>();
-
-                foreach (var comp in entManager.GetComponents<IBaseNetConnectorComponent<TNetType>>(node.Owner))
+                // TODO POWER PERFORMANCE
+                // Replace this with TryComps or some other sane way of doing this, the current solution is awful.
+                // This allocates an array, copies ALL of an entities components over, and then iterates over them to
+                // yield any that implement the interface.
+                foreach (var comp in EntMan.GetComponents<IBaseNetConnectorComponent<TNetType>>(node.Owner))
                 {
                     if ((comp.NodeId == null ||
                          comp.NodeId == node.Name) &&
                         (NodeGroupID) comp.Voltage == node.NodeGroupID)
                     {
-                        newNetConnectorComponents.Add(comp);
+                        SetNetConnectorNet(comp);
                     }
                 }
-
-                foreach (var netConnector in newNetConnectorComponents)
-                {
-                    SetNetConnectorNet(netConnector);
-                }
             }
         }