Fix default data store config id

Author: webprofusion-chrisc

src/Certify.Core/Management/CertifyManager/CertifyManager.DataStores.cs

@@ -16,7 +16,6 @@ public partial class CertifyManager
     {
         private object _dataStoreLocker = new object();
 
-
         private async Task InitDataStore()
         {
             var enableExtendedDataStores = true;
@@ -29,7 +28,7 @@ private async Task InitDataStore()
                     var defaultStoreId = CoreAppSettings.Current.ConfigDataStoreConnectionId;
                     var dataStoreInfo = await GetDataStore(defaultStoreId);
 
-                    if (string.IsNullOrEmpty(defaultStoreId) || defaultStoreId == "(default)")
+                    if (string.IsNullOrEmpty(defaultStoreId) || defaultStoreId == "(default)" || defaultStoreId == "0")
                     {
                         // default sqlite storage
                         _itemManager = new SQLiteManagedItemStore("", _serviceLog);

src/Certify.Models/Config/Preferences.cs

@@ -111,7 +111,7 @@ public class Preferences : BindableBase
         /// <summary>
         /// Id of the data store connection configuration to use. 0 is the default scheme using local SQLite
         /// </summary>
-        public string ConfigDataStoreConnectionId { get; set; } = "0";
+        public string? ConfigDataStoreConnectionId { get; set; } = "(default)";
 
         /// <summary>
         /// If set, defines the default key type used for private keys

src/Certify.UI.Shared/ViewModel/AppViewModel/AppViewModel.Settings.cs

@@ -136,7 +136,7 @@ public virtual async Task SavePreferences()
                 // set datastoreid and feature flags to pass model validation
                 if (Preferences.ConfigDataStoreConnectionId == null)
                 {
-                    Preferences.ConfigDataStoreConnectionId = "0";
+                    Preferences.ConfigDataStoreConnectionId = "(default)";
                 }
 
                 if (Preferences.FeatureFlags == null)