Alerts for breathing plasma/tritium (#24484)

* Alert autoremove v0

* Code cleanup and timing

* comment

* Tritium, code compression

* not resolving manually

* reduced lookups, new comp

* fix-fix yes

* use RemCompDeferred, handle OnUnpaused

* missed a todo

* entitysystem resolve

* remove unnecessary component updates

* remove AlertState from comp, move EntityUnpausedEvent actions to AlertStateComponent's Timespan

* Code cleanup

* comments

* combines AutoRemove input into Clear

* minor logic adjustment that does not really change anything but is less ambiguous

Content.Client/UserInterface/Systems/Alerts/Widgets/AlertsUI.xaml.cs

@@ -92,7 +92,8 @@ public sealed partial class AlertsUI : UIWidget
             {
                 // key is the same, simply update the existing control severity / cooldown
                 existingAlertControl.SetSeverity(alertState.Severity);
-                existingAlertControl.Cooldown = alertState.Cooldown;
+                if (alertState.ShowCooldown)
+                    existingAlertControl.Cooldown = alertState.Cooldown;
             }
             else
             {
@@ -133,9 +134,13 @@ public sealed partial class AlertsUI : UIWidget
 
     private AlertControl CreateAlertControl(AlertPrototype alert, AlertState alertState)
     {
+        (TimeSpan, TimeSpan)? cooldown = null;
+        if (alertState.ShowCooldown)
+            cooldown = alertState.Cooldown;
+
         var alertControl = new AlertControl(alert, alertState.Severity)
         {
-            Cooldown = alertState.Cooldown
+            Cooldown = cooldown
         };
         alertControl.OnPressed += AlertControlPressed;
         return alertControl;