Fix: Custom root folders are just added to exting root folders when set. (#588)

Author: KevinJump

uSync.BackOffice/Configuration/uSyncSettings.cs

@@ -18,11 +18,8 @@ public class uSyncSettings
         /// <summary>
         ///  collection of folders uSync looks in when performing imports.
         /// </summary>
-        [DefaultValue("uSync/Root/, uSync/v14")]
-        public string[] Folders { get; set; } = [
-            "uSync/Root/",
-            "uSync/v14/"
-        ];
+        [DefaultValue("uSync/Root/, uSync/v14/")]
+        public string[] Folders { get; set; } = [ ];
 
         /// <summary>
         ///  folder that has old things in. 

uSync.BackOffice/uSyncBackOfficeBuilderExtensions.cs

@@ -90,6 +90,14 @@ public static IUmbracoBuilder AdduSync(this IUmbracoBuilder builder, Action<uSyn
 
             builder.Services.AddTransient<ISyncActionService, SyncActionService>();
 
+            _ = builder.Services.PostConfigure<uSyncSettings>(options =>
+            {
+                if (options.Folders == null || options.Folders.Length == 0)
+                {
+                    options.Folders = ["uSync/Root/", "uSync/v14/"];
+                }
+            });
+
             return builder;
         }