Content update for UI prediction (#27214)

* Content update for UI refactor

* Big update

* Sharing

* Remaining content updates

* First big update

* Prototype updates

* AUGH

* Fix UI comp ref

* Cleanup

- Fix predicted message, fix item slots, fix interaction range check.

* Fix regressions

* Make this predictive

idk why it wasn't.

* Fix slime merge

* Merge conflict

* Fix merge

Content.Server/DeviceLinking/Systems/SignalTimerSystem.cs

@@ -48,9 +48,9 @@ public sealed class SignalTimerSystem : EntitySystem
     {
         var time = TryComp<ActiveSignalTimerComponent>(uid, out var active) ? active.TriggerTime : TimeSpan.Zero;
 
-        if (_ui.TryGetUi(uid, SignalTimerUiKey.Key, out var bui))
+        if (_ui.HasUi(uid, SignalTimerUiKey.Key))
         {
-            _ui.SetUiState(bui, new SignalTimerBoundUserInterfaceState(component.Label,
+            _ui.SetUiState(uid, SignalTimerUiKey.Key, new SignalTimerBoundUserInterfaceState(component.Label,
                 TimeSpan.FromSeconds(component.Delay).Minutes.ToString("D2"),
                 TimeSpan.FromSeconds(component.Delay).Seconds.ToString("D2"),
                 component.CanEditLabel,
@@ -70,9 +70,9 @@ public sealed class SignalTimerSystem : EntitySystem
         _audio.PlayPvs(signalTimer.DoneSound, uid);
         _signalSystem.InvokePort(uid, signalTimer.TriggerPort);
 
-        if (_ui.TryGetUi(uid, SignalTimerUiKey.Key, out var bui))
+        if (_ui.HasUi(uid, SignalTimerUiKey.Key))
         {
-            _ui.SetUiState(bui, new SignalTimerBoundUserInterfaceState(signalTimer.Label,
+            _ui.SetUiState(uid, SignalTimerUiKey.Key, new SignalTimerBoundUserInterfaceState(signalTimer.Label,
                 TimeSpan.FromSeconds(signalTimer.Delay).Minutes.ToString("D2"),
                 TimeSpan.FromSeconds(signalTimer.Delay).Seconds.ToString("D2"),
                 signalTimer.CanEditLabel,
@@ -117,10 +117,7 @@ public sealed class SignalTimerSystem : EntitySystem
     /// <param name="uid">The entity that is interacted with.</param>
     private bool IsMessageValid(EntityUid uid, BoundUserInterfaceMessage message)
     {
-        if (message.Session.AttachedEntity is not { Valid: true } mob)
-            return false;
-
-        if (!_accessReader.IsAllowed(mob, uid))
+        if (!_accessReader.IsAllowed(message.Actor, uid))
             return false;
 
         return true;