Renaming a blueprint to None will cause the blueprint to become unusable

Renaming a blueprint to None will cause the blueprint to become unusable. The first time an item is named it will prevent the user from naming it "None". However, when renaming the asset the user can set the name to "None"

1. Open the editor
2. Create a new widget blueprint
3. Press enter to give it a default name
4. Click it again
5. Press F2 to rename
6. Set the name to "None"
7. Try to open the blueprint
8. Notice that the blueprint can no longer be used

Expected: The user would be given an error that stops them from renaming the asset to "None"
Result: The first time an item is named it will prevent the user from naming it "None". However, when renaming the asset the user can set the name to "None"