Fix action bar not filling with mappables (#17218)

* Fix action bar not filling with mappables

* Update Content.Client/UserInterface/Systems/Actions/ActionUIController.cs

---------

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Client/Mapping/MappingSystem.cs

@@ -84,6 +84,7 @@ public sealed partial class MappingSystem : EntitySystem
 
             ev.Action = new InstantAction()
             {
+                ClientExclusive = true,
                 CheckCanInteract = false,
                 Event = actionEvent,
                 DisplayName = Loc.GetString(tileDef.Name),
@@ -97,6 +98,7 @@ public sealed partial class MappingSystem : EntitySystem
         {
             ev.Action = new InstantAction()
             {
+                ClientExclusive = true,
                 CheckCanInteract = false,
                 Event = actionEvent,
                 DisplayName = "action-name-mapping-erase",
@@ -111,6 +113,7 @@ public sealed partial class MappingSystem : EntitySystem
 
         ev.Action = new InstantAction()
         {
+            ClientExclusive = true,
             CheckCanInteract = false,
             Event = actionEvent,
             DisplayName = actionEvent.EntityType,