Predict ActivatableUIRequiresPower (#28405)

A lot of BUIs aren't going to handle the state coming in cleanly but we can fix em as we find em.

(cherry picked from commit e4a5f2a1450d226bf281e46f1323f41213707bb6)

Content.Shared/Power/EntitySystems/SharedActivatableUIRequiresPowerSystem.cs

@@ -0,0 +1,15 @@
+using Content.Shared.Power.Components;
+using Content.Shared.UserInterface;
+
+namespace Content.Shared.Power.EntitySystems;
+
+public abstract class SharedActivatableUIRequiresPowerSystem : EntitySystem
+{
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<ActivatableUIRequiresPowerComponent, ActivatableUIOpenAttemptEvent>(OnActivate);
+    }
+
+    protected abstract void OnActivate(Entity<ActivatableUIRequiresPowerComponent> ent, ref ActivatableUIOpenAttemptEvent args);
+}