Update MSI exit message (PowerShell#18137)

Author: TravisEz13

assets/wix/Product.wxs

@@ -110,7 +110,7 @@
     <UI>
       <Dialog Id="MyExitDialog" Width="370" Height="270" Title="!(loc.ExitDialog_Title)">
         <Control Id="Bitmap" Type="Bitmap" X="0" Y="0" Width="370" Height="234" TabSkip="yes" Text="!(loc.ExitDialogBitmap)" />
-        <Control Id="Title" Type="Text" X="135" Y="20" Width="220" Height="60" Transparent="yes" NoPrefix="yes" Text="!(loc.ExitDialogTitle)" TabSkip="yes" />
+        <Control Id="Title" Type="Text" X="135" Y="20" Width="220" Height="60" Transparent="yes" NoPrefix="yes" Text="{\WixUI_Font_Bigger}!(loc.Error1707)" TabSkip="yes" />
         <Control Id="Description" Type="Text" X="135" Y="70" Width="220" Height="20" Transparent="yes" NoPrefix="yes" Text="!(loc.ExitDialogDescription)" TabSkip="yes" />
         <!-- divider between check boxes and button row -->
         <Control Id="BottomLine" Type="Line" X="0" Y="234" Width="370" Height="0" TabSkip="yes"  />