UI: Fix icons getting cutoff in the About window (#310)

Before:


![image](https://github.com/user-attachments/assets/c8d6b7d5-487b-4ab9-83e3-9489eaa0a076)

After:


![image](https://github.com/user-attachments/assets/18ea6360-f6ee-48e6-9a0a-cd8d88a0cf51)

src/Ryujinx/UI/Windows/AboutWindow.axaml

@@ -6,8 +6,10 @@
     xmlns:ext="clr-namespace:Ryujinx.Ava.Common.Markup"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     xmlns:viewModel="clr-namespace:Ryujinx.Ava.UI.ViewModels"
-    Width="550"
-    Height="260"
+    MinWidth="550"
+    MinHeight="260"
+    MaxWidth="600"
+    MaxHeight="500"
     Margin="0,-12,0,0"
     d:DesignHeight="260"
     d:DesignWidth="550"