fix: 修复Log存在重复属性时，忽略处理

Author: jianxuanbing

framework/src/Bing.Logging/Bing/Logging/Log.cs

@@ -269,7 +269,10 @@ protected virtual void ConvertStateToContent()
         {
             if (item.Value.SafeString().IsEmpty())
                 continue;
-            LogProperties.Add(item);
+            if (LogProperties.ContainsKey(item.Key)) 
+                LogProperties[item.Key] = item.Value;
+            else
+                LogProperties.Add(item.Key, item.Value);
         }
     }
 

framework/tests/Bing.Logging.Serilog.Tests/LogTest.cs

@@ -113,8 +113,9 @@ public void Test_LogTrace_Message_9()
         _log.EventId(119)
             .Message("Test_LogTrace_Message_9_{id}", $"id_{Id.NewString()}")
             .State(new Product { Code = "a", Name = "b", Price = 123 })
-            .Property("Age","18")
-            .Property("Description","hello")
+            .Property("Code", "a")
+            .Property("Age", "18")
+            .Property("Description", "hello")
             .LogTrace();
     }
 
@@ -142,4 +143,4 @@ public void Test_LogTrace_Property_2()
             .State(new Product { Code = "a", Name = "b", Price = 123 })
             .LogTrace();
     }
-}
+}