Fix being able to place cables on non-subfloor tiles

- Also performs an actionblocker check just in case.

Content.Server/Power/Components/CablePlacerComponent.cs

@@ -1,7 +1,9 @@
 using System.Threading.Tasks;
 using Content.Server.Stack;
+using Content.Shared.ActionBlocker;
 using Content.Shared.Interaction;
 using Content.Shared.Interaction.Helpers;
+using Content.Shared.Maps;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
 using Robust.Shared.Map;
@@ -29,26 +31,35 @@ namespace Content.Server.Power.Components
         /// <inheritdoc />
         async Task<bool> IAfterInteract.AfterInteract(AfterInteractEventArgs eventArgs)
         {
+            if (!EntitySystem.Get<ActionBlockerSystem>().CanInteract(eventArgs.User))
+                return false;
+
             if (_cablePrototypeID == null)
-                return true;
+                return false;
+
             if (!eventArgs.InRangeUnobstructed(ignoreInsideBlocker: true, popup: true))
-                return true;
+                return false;
+
             if(!_mapManager.TryGetGrid(eventArgs.ClickLocation.GetGridId(Owner.EntityManager), out var grid))
-                return true;
+                return false;
+
             var snapPos = grid.TileIndicesFor(eventArgs.ClickLocation);
-            if(grid.GetTileRef(snapPos).Tile.IsEmpty)
-                return true;
+            var tileDef = grid.GetTileRef(snapPos).Tile.GetContentTileDefinition();
+
+            if(!tileDef.IsSubFloor || tileDef.IsSpace)
+                return false;
+
             foreach (var anchored in grid.GetAnchoredEntities(snapPos))
             {
                 if (Owner.EntityManager.TryGetComponent<CableComponent>(anchored, out var wire) && wire.CableType == _blockingCableType)
                 {
-                    return true;
+                    return false;
                 }
             }
 
             if (Owner.TryGetComponent<StackComponent>(out var stack)
                 && !EntitySystem.Get<StackSystem>().Use(Owner.Uid, 1, stack))
-                return true;
+                return false;
 
             Owner.EntityManager.SpawnEntity(_cablePrototypeID, grid.GridTileToLocal(snapPos));
             return true;