Remove IConversationSideCar dependency

Author: Oceania2018

src/Infrastructure/BotSharp.Core/Conversations/Services/ConversationStateService.cs

@@ -27,7 +27,6 @@ public class ConversationStateService : IConversationStateService, IDisposable
     private readonly ILogger _logger;
     private readonly IServiceProvider _services;
     private readonly IBotSharpRepository _db;
-    private readonly IConversationSideCar _sidecar;
     private string _conversationId;
     /// <summary>
     /// States in the current round of conversation
@@ -41,12 +40,10 @@ public class ConversationStateService : IConversationStateService, IDisposable
     public ConversationStateService(
         IServiceProvider services,
         IBotSharpRepository db,
-        IConversationSideCar sidecar,
         ILogger<ConversationStateService> logger)
     {
         _services = services;
         _db = db;
-        _sidecar = sidecar;
         _logger = logger;
         _curStates = new ConversationState();
         _historyStates = new ConversationState();
@@ -142,8 +139,9 @@ public Dictionary<string, string> Load(string conversationId, bool isReadOnly =
         _conversationId = !isReadOnly ? conversationId : null;
         Reset();
 
+        var sidecar = _services.GetService<IConversationSideCar>();
         var endNodes = new Dictionary<string, string>();
-        if (_sidecar?.IsEnabled() == true)
+        if (sidecar?.IsEnabled() == true)
         {
             return endNodes;
         }
@@ -219,7 +217,8 @@ public Dictionary<string, string> Load(string conversationId, bool isReadOnly =
 
     public void Save()
     {
-        if (_conversationId == null || _sidecar?.IsEnabled() == true)
+        var sidecar = _services.GetService<IConversationSideCar>();
+        if (_conversationId == null || sidecar?.IsEnabled() == true)
         {
             Reset();
             return;