Cleanup some Client atmos systems (#33634)

* Cleanup `ScrubberControl.xaml.cs`

* Minor cleanups

* Another pile of minor cleanups

* Apply requested changes

* Rename "which" into "bound". Add whitespace after "if"

Content.Client/Atmos/Monitor/UI/AirAlarmWindow.xaml.cs

@@ -8,7 +8,6 @@ using Content.Shared.Atmos.Monitor.Components;
 using Content.Shared.Atmos.Piping.Unary.Components;
 using Content.Shared.Temperature;
 using Robust.Client.AutoGenerated;
-using Robust.Client.GameObjects;
 using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.XAML;
 
@@ -59,7 +58,7 @@ public sealed partial class AirAlarmWindow : FancyWindow
                 AirAlarmMode.Fill => "air-alarm-ui-mode-fill",
                 AirAlarmMode.Panic => "air-alarm-ui-mode-panic",
                 AirAlarmMode.None => "air-alarm-ui-mode-none",
-                _ => "error"
+                _ => "error",
             };
             _modes.AddItem(Loc.GetString(text));
         }
@@ -70,7 +69,7 @@ public sealed partial class AirAlarmWindow : FancyWindow
             AirAlarmModeChanged!.Invoke((AirAlarmMode) args.Id);
         };
 
-        _autoMode.OnToggled += args =>
+        _autoMode.OnToggled += _ =>
         {
             AutoModeChanged!.Invoke(_autoMode.Pressed);
         };
@@ -176,22 +175,18 @@ public sealed partial class AirAlarmWindow : FancyWindow
 
     public static Color ColorForThreshold(float amount, AtmosAlarmThreshold threshold)
     {
-        threshold.CheckThreshold(amount, out AtmosAlarmType curAlarm);
+        threshold.CheckThreshold(amount, out var curAlarm);
         return ColorForAlarm(curAlarm);
     }
 
     public static Color ColorForAlarm(AtmosAlarmType curAlarm)
     {
-        if(curAlarm == AtmosAlarmType.Danger)
+        return curAlarm switch
         {
-            return StyleNano.DangerousRedFore;
-        }
-        else if(curAlarm == AtmosAlarmType.Warning)
-        {
-            return StyleNano.ConcerningOrangeFore;
-        }
-
-        return StyleNano.GoodGreenFore;
+            AtmosAlarmType.Danger => StyleNano.DangerousRedFore,
+            AtmosAlarmType.Warning => StyleNano.ConcerningOrangeFore,
+            _ => StyleNano.GoodGreenFore,
+        };
     }