Fix model binding type

framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/AbpMvcOptionsExtensions.cs

@@ -59,7 +59,7 @@ namespace Volo.Abp.AspNetCore.Mvc
         private static void AddModelBinders(MvcOptions options)
         {
             options.ModelBinderProviders.Insert(0, new AbpDateTimeModelBinderProvider());
-            options.ModelBinderProviders.Insert(0, new AbpExtraPropertiesDictionaryModelBinderProvider());
+            options.ModelBinderProviders.Insert(1, new AbpExtraPropertiesDictionaryModelBinderProvider());
         }
 
         private static void AddMetadataProviders(MvcOptions options, IServiceCollection services)

framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ModelBinding/AbpExtraPropertiesDictionaryModelBinderProvider.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Generic;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.ModelBinding;
 using Microsoft.AspNetCore.Mvc.ModelBinding.Binders;
@@ -19,7 +18,7 @@ namespace Volo.Abp.AspNetCore.Mvc.ModelBinding
                 throw new ArgumentNullException(nameof(context));
             }
 
-            if (context.Metadata.ModelType != typeof(Dictionary<string, object>))
+            if (context.Metadata.ModelType != typeof(ExtraPropertyDictionary))
             {
                 return null;
             }