Add tip about full vs data-only BP editor

[anUrbanGoose]

Added a Tip about the fact that UE5 opens data only blueprints in a simplified BP editor, and that it may be necessary to click "Open Full Blueprint Editor"

[budak7273]

I agree this is a useful tip (the editor warns you about it whenever you have a data only blueprint opened) but I'm not sure this is a useful place in the docs to put it. You could run into this at any point when opening any data only asset, and this is the CDO page. What blueprint were you opening when you first found out about this mechanic?

Opening a freshly created blueprint asset for the first time will open the extended BP editor; the data-only mode happens on future opens if that asset has no scripts or variables.

[anUrbanGoose]

I encountered this specific issue when creating a BP for a CDO modification, and it did in fact open as a data only BP initially.
But I agree, the CDO page is probably not the best place to put this, but right now I'm not sure where would be better.

[budak7273]

I'll mark this as a draft until someone comes up with a better home for the tip