Consider throwing error if the user checks the checkbox but doesn't provide the SDKs

Ideally, users must select their published SDKs from the list (combo box) before continuing, only if that applies to them (if they checked the check-box above)

However, there are some problems with this element, we should take a deeper look and maybe think on other ways to allow them to search for their SDKs and how to display them, instead of having a huge list coming out from that combo box.

See comment: https://github.com/Azure/azure-sdk-tools/issues/6977#issuecomment-1721862532