Fix GetTableAlias with one-to-one relationship

[maftieu]

With a one-to-one relationship, updating the "dependant" entry with a criteria on the "parent" entity results in a WHERE clause like this one

FROM [dbo].[ChildEntity] AS [Extent1]     INNER JOIN [dbo].[ParentEntity] AS [Extent2] ON [Extent2].[Id] = [Extent1].[Id]

The SqlBuilder.GetTableAlias() function returns something like [Extent2] ON [Extent2].[Id] = [Extent1].[Id], which is wrong.

[NorthernLight1]

I reviewed the code and it looks good.