Fix general panel not being visible when adding new games

LANCommander/Pages/Games/Edit.razor

@@ -144,12 +144,25 @@
     [data-panel] {
         display: none;
     }
-
-    [data-panel="@Panel"] {
-        display: block;
-    }
 </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; }
     [Parameter] public string Panel { get; set; }