Fix UpdateWaitWindow.axaml windows being too big

There is currently an issue where to windows where it says "Installing firmware..." has no rounded corners

src/Ryujinx/Assets/Styles/Styles.xaml

@@ -1,7 +1,8 @@
 <Styles
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:ui="clr-namespace:FluentAvalonia.UI.Controls;assembly=FluentAvalonia">
+    xmlns:ui="clr-namespace:FluentAvalonia.UI.Controls;assembly=FluentAvalonia"
+    xmlns:windowing="clr-namespace:FluentAvalonia.UI.Windowing;assembly=FluentAvalonia">
     <Design.PreviewWith>
         <Border Height="2000"
                 Padding="20">
@@ -231,7 +232,7 @@
         <Setter Property="BorderBrush"
                 Value="{DynamicResource HighlightBrush}" />
     </Style>
-    <Style Selector="Button">
+    <Style Selector="Button:not(windowing|MinMaxCloseControl Button)">
         <Setter Property="MinWidth"
                 Value="80" />
     </Style>

src/Ryujinx/UI/Controls/UpdateWaitWindow.axaml

@@ -7,6 +7,7 @@
     Title="Ryujinx - Waiting"
     SizeToContent="WidthAndHeight"
     WindowStartupLocation="CenterOwner"
+    CanResize="False"
     mc:Ignorable="d"
     Focusable="True">
     <Grid

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"
+    MinWidth="550"
-    Height="260"
+    MinHeight="260"
+    MaxWidth="600"
+    MaxHeight="500"
     Margin="0,-12,0,0"
     d:DesignHeight="260"
     d:DesignWidth="550"