Remove client state from server AirAlarmComponent (#31236)

* Remove client state from server AirAlarmComponent

Send information for all connected devices, not just the ones for the
current tab, as attempting to limit this breaks multiple users viewing
the same UI.

Fixes #12842

* Send device data as a list, rather than a dictionary

---------

Co-authored-by: Eoin Mcloughlin <helloworld@eoinrul.es>

Content.Server/Atmos/Monitor/Components/AirAlarmComponent.cs

@@ -17,8 +17,6 @@ public sealed partial class AirAlarmComponent : Component
     // Remember to null this afterwards.
     [ViewVariables] public IAirAlarmModeUpdate? CurrentModeUpdater { get; set; }
 
-    [ViewVariables] public AirAlarmTab CurrentTab { get; set; }
-
     public readonly HashSet<string> KnownDevices = new();
     public readonly Dictionary<string, GasVentPumpData> VentData = new();
     public readonly Dictionary<string, GasVentScrubberData> ScrubberData = new();