ISSUE: Layout of "Duplicate Names Detected" dialog is awkward

[Donovan Keith]

1. "Auto rename" -> "Auto Rename"
2. Fit the size of the buttons to the size of the text.
3. Add a line break between "Duplicate object names detected." and "Names must be unique for proper syncing."
4. Add a bit of padding on the sides of the dialog and between the buttons.
5. Fit the width/height of the dialog to that of the text/buttons.
6. Change text to "Duplicate object/materials detected..." as that can also trigger an issue, even if all objects have unique names.