Upgrade Assistant creates invalid type for output bindings with return targets

I have a `[return: Table(...)]` attribute attached to the function. The return type itself is a `Task` where `T` is a user-defined POCO. After the upgrade, this is replaced with a `[TableInputOutput(...)]` equivalent. That type does not exist, and this generates two build errors:

>Error CS0246 The type or namespace name 'TableInputOutput' could not be found (are you missing a using directive or an assembly reference?)
Error CS0246 The type or namespace name 'TableInputOutputAttribute' could not be found (are you missing a using directive or an assembly reference?)

This was observed for a V4 project, upgrading to .NET 8.

It is expected that this would just become a `[TableOutput(...)]`.