adjust initial dialog to opt in/out into census with buttons

MareSynchronos/UI/Components/Popup/BanUserPopupHandler.cs

@@ -22,6 +22,8 @@ public class BanUserPopupHandler : IPopupHandler
 
     public Vector2 PopupSize => new(500, 250);
 
+    public bool ShowClose => true;
+
     public void DrawContent()
     {
         UiSharedService.TextWrapped("User " + (_reportedPair.UserData.AliasOrUID) + " will be banned and removed from this Syncshell.");
@@ -37,10 +39,6 @@ public class BanUserPopupHandler : IPopupHandler
         UiSharedService.TextWrapped("The reason will be displayed in the banlist. The current server-side alias if present (Vanity ID) will automatically be attached to the reason.");
     }
 
-    public void OnClose()
-    {
-    }
-
     public void Open(OpenBanUserPopupMessage message)
     {
         _reportedPair = message.PairToBan;