Add validation check for mismatched Content Group settings in Components

[ormsbee]

No description provided.

[bradenmacdonald]

@jmakowski1123 @ormsbee @ali-hugo

I think this already exists in the platform.

Here's what happens now. Note that this XBlock is restricted to a particular content group:

If I copy it and paste into the same course, the content group is preserved as you'd expect.

If I paste it into a different course, I get this warning:

This seems to be compatible with the technical approach doc which says: "For the initial MVP, allow incompatible items to be pasted, and surface the errors in the Studio UI."

So: is this behavior sufficient, or do we want something different?

[ormsbee]

@bradenmacdonald: yeah, I think the existing UI is sufficient–I just wasn't aware of it when I wrote this. I'm closing this for now–anyone should feel free to re-open it if you think it needs further discussion.