Predefine old name when renaming persons

[BrewGnu]

Describe the enhancement you'd like
When renaming a person, it would be great to have the old name in the renaming field.

Describe why this will benefit the LibrePhotos
I am at the beginning of naming all my faces and had to rename them quite many times. For example adding the prefix "Work - " or "Teachers -" would be much easier that way.

Additional context