Brush presets - Reset properties to default before applying preset

Layer properties - Disable keyframes when resetting to default
Device dialogs - Only dim unselected LEDs if a LED is selected
Migrations - Renamed to stay in order 
Migrations - Added migration for color gradients

src/Artemis.UI/Screens/Settings/Device/DeviceDialogViewModel.cs

@@ -94,7 +94,7 @@ namespace Artemis.UI.Screens.Settings.Device
 
         private void CoreServiceOnFrameRendering(object sender, FrameRenderingEventArgs e)
         {
-            if (SelectedLeds == null)
+            if (SelectedLeds == null || !SelectedLeds.Any())
                 return;
 
             using SKPaint highlightPaint = new() {Color = SKColors.White};