DatabaseGeneratedAttribute in scaffolded code

[smitpatel]

Currently we don't generate that attribute at all.

Split off from #22122

[bricelam]

You say that like it's a bad thing... 😏

[ajcvickers]

@bricelam Was this by-design?

[smitpatel]

If it was a bad thing then it would have been a 🐛

[bricelam]

I don’t know. I remember the mismatch between its enum and ours came up in the past. But I don’t remember deciding to never do it.

[ajcvickers]

Note from triage: we should scaffold this when data annotations are being used and the property does not match the convention. Yes, the naming is bad, but it is what it is now.