Query: InvalidCastExpression when inferred type mapping fails to print literal

[smitpatel]

public virtual async Task Can_filter_projection_with_inline_enum_variable(bool async)
        {
            using (var context = CreateContext())
            {
                var query = context
                    .Set<EmailTemplate>()
                    .Select(
                        t => new EmailTemplateDto
                        {
                            Id = t.Id,
                            TemplateType = (EmailTemplateTypeDto)t.TemplateType
                        })
                    .Where(t => t.TemplateType == EmailTemplateTypeDto.PasswordResetRequest);

                var results = async
                    ? await query.ToListAsync()
                    : query.ToList();

                Assert.Equal(1, results.Count);
                Assert.Equal(EmailTemplateTypeDto.PasswordResetRequest, results.Single().TemplateType);
            }
        }

For predicate in this case, we never see enum constant. It is always converted to int. And then we use type mapping from the other side to print out the int which throws

Message: 
    System.InvalidCastException : Invalid cast from 'System.Int32' to 'Microsoft.EntityFrameworkCore.BuiltInDataTypesTestBase`1+EmailTemplateTypeDto[[Microsoft.EntityFrameworkCore.ConvertToProviderTypesSqlServerTest+ConvertToProviderTypesSqlServerFixture, Microsoft.EntityFrameworkCore.SqlServer.FunctionalTests, Version=42.42.42.42, Culture=neutral, PublicKeyToken=adb9793829ddae60]]'.
  Stack Trace: 
    at Convert.DefaultToType(IConvertible value, Type targetType, IFormatProvider provider)
    at IConvertible.ToType(Type type, IFormatProvider provider)
    at Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
    at Convert.ChangeType(Object value, Type conversionType)
    at ValueConverter`2.Sanitize[T](Object value) in ValueConverter`.cs line: 52
    at <>c__DisplayClass3_0`2.<SanitizeConverter>b__0(Object v) in ValueConverter`.cs line: 43
    at RelationalTypeMapping.GenerateSqlLiteral(Object value) in RelationalTypeMapping.cs line: 503
    at QuerySqlGenerator.VisitSqlConstant(SqlConstantExpression sqlConstantExpression) in QuerySqlGenerator.cs line: 318
    at SqlExpressionVisitor.VisitExtension(Expression extensionExpression) in SqlExpressionVisitor.cs line: 58
    at QuerySqlGenerator.VisitSqlBinary(SqlBinaryExpression sqlBinaryExpression) in QuerySqlGenerator.cs line: 298
    at SqlExpressionVisitor.VisitExtension(Expression extensionExpression) in SqlExpressionVisitor.cs line: 52
    at QuerySqlGenerator.VisitSelect(SelectExpression selectExpression) in QuerySqlGenerator.cs line: 111
    at QuerySqlGenerator.GetCommand(SelectExpression selectExpression) in QuerySqlGenerator.cs line: 57
    at Enumerator.MoveNext() in QueryingEnumerable.cs line: 101
    at List`1.ctor(IEnumerable`1 collection)
    at Enumerable.ToList[TSource](IEnumerable`1 source)
    at BuiltInDataTypesTestBase`1.Can_filter_projection_with_inline_enum_variable(Boolean async) in BuiltInDataTypesTestBase.cs line: 72
    at --- End of stack trace from previous location where exception was thrown ---