Use provider-agnostic parameter in new TVP offline tests

The two new offline tests hardcoded Microsoft.Data.SqlClient.SqlParameter
even when running under the SystemSqlClientParameterTests variant,
unlike the rest of this file which uses Provider.CreateRawParameter to
stay provider-agnostic across the two test subclasses.

Author: hexonal

tests/Dapper.Tests/ParameterTests.cs

@@ -535,7 +535,7 @@ public void TestSqlDataRecordListParametersWithAsTableValuedParameterSinglePassS
         public void AsTableValuedParameterDoesNotEnumerateNonCollectionSource()
         {
             var records = new SingleEnumerationEnumerable<IDataRecord>(Enumerable.Empty<IDataRecord>());
-            var parameter = new Microsoft.Data.SqlClient.SqlParameter();
+            var parameter = Provider.CreateRawParameter("integers", DBNull.Value);
 
             SqlDataRecordListTVPParameter<IDataRecord>.Set(parameter, records, "int_list_type");
 
@@ -546,7 +546,7 @@ public void AsTableValuedParameterDoesNotEnumerateNonCollectionSource()
         [Fact]
         public void AsTableValuedParameterNullsOutEmptyCollectionSource()
         {
-            var parameter = new Microsoft.Data.SqlClient.SqlParameter();
+            var parameter = Provider.CreateRawParameter("integers", DBNull.Value);
 
             SqlDataRecordListTVPParameter<IDataRecord>.Set(parameter, Array.Empty<IDataRecord>(), "int_list_type");