refactor: MessageReceiverUser GetEqualityValues (#571)

* refactor: Optimize SMS sending

* fix：Receivers Variables Lost

* refactor: MessageReceiverUser GetEqualityValues

src/Services/Masa.Mc.Service/Domain/MessageTasks/Aggregates/MessageReceiverUser.cs

@@ -15,6 +15,12 @@ protected override IEnumerable<object> GetEqualityValues()
     {
         yield return UserId;
         yield return ChannelUserIdentity;
+
+        foreach (var variable in Variables.OrderBy(x => x.Key))
+        {
+            yield return variable.Key;
+            yield return variable.Value?.ToString() ?? string.Empty;
+        }
     }
 
     private MessageReceiverUser() { }

src/Services/Masa.Mc.Service/Infrastructure/ChannelUserFinder/Provider/Auth/AuthChannelUserFinder.cs

@@ -35,8 +35,7 @@ public async Task<IEnumerable<MessageReceiverUser>> GetReceiverUsersAsync(AppCha
         var groupReceivers = await TransformGroupReceiversAsync(channel, variables, receivers.Where(x => x.Type == MessageTaskReceiverTypes.Group));
         receiverUsers.AddRange(groupReceivers);
 
-        return receiverUsers.DistinctBy(x => new { x.UserId, x.ChannelUserIdentity });
-
+        return receiverUsers.Distinct();
     }
 
     public async Task<IEnumerable<MessageReceiverUser>> TransformUserReceivers(AppChannel Channel, ExtraPropertyDictionary variables, IEnumerable<MessageTaskReceiver> receivers)