Use TryAdd, copilot thinks it is faster

Author: pauldendulk

source/AliFlux/VexTile.Renderers.Mvt.AliFlux/SKColorFactory.cs

@@ -45,7 +45,7 @@ public static SKColor LogColor(SKColor color, [CallerMemberName] string callerNa
         // Use the packed ARGB from the color directly
         uint key = (uint)color;
 
-        Colours[key] = color;
+        _ = Colours.TryAdd(key, color);
 
 #if DEBUG_COLORS
         var hex = MakeKeyHex(color.Red, color.Green, color.Blue, color.Alpha);