Fix general panel not being visible when adding new games

LANCommander/Pages/Games/Edit.razor

@@ -144,11 +144,24 @@
     [data-panel] {
         display: none;
     }
+</style>
 
+@if (!String.IsNullOrWhiteSpace(Panel))
+{
+    <style>
         [data-panel="@Panel"] {
             display: block;
         }
     </style>
+}
+else
+{
+    <style>
+        [data-panel="General"] {
+            display: block;
+        }
+    </style>
+}
 
 @code {
     [Parameter] public Guid Id { get; set; }