Query: Better exception message when invalid expression in Include

[rowanmiller]

See this thread #1833
We should provide a clearer error stating that only navigation paths are allowed at the moment

[smitpatel]

@maumar - What would be current exception message?

[maumar]

Fix for #3910 should address this. New exception is (will double check that the scenario in the bug is affected)

Lambda expression '{includeLambdaExpression}' is not valid for Include/ThenInclude result operator. The expression should represent a property access: 't => t.MyProperty'. Specify lambda parameter explicitly to access navigations on derived types: '(Derived t) => t.MyProperty'. For more information on including related data, see