Fallback to Enumerable.Any() for detecting empty table-valued parameters.

Dapper/SqlDataRecordListTVPParameter.cs

 using System;
 using System.Collections.Generic;
 using System.Data;
+using System.Linq;
 
 namespace Dapper
 {
@@ -32,7 +33,7 @@ void SqlMapper.ICustomQueryParameter.AddParameter(IDbCommand command, string nam
 
         internal static void Set(IDbDataParameter parameter, IEnumerable<Microsoft.SqlServer.Server.SqlDataRecord> data, string typeName)
         {
-            parameter.Value = (object)data;
+            parameter.Value = data != null && data.Any() ? data : null;
             if (parameter is System.Data.SqlClient.SqlParameter sqlParam)
             {
                 sqlParam.SqlDbType = SqlDbType.Structured;