`CEP78` should allow to remint the token after burn.

[Maciej Zieliński]

This code https://github.com/odradev/odra/blob/release/1.1.0/modules/src/cep78/token.rs#L281-L283 errors with DuplicateIdentifier error when I try to do this:

mint(token_id)
burn(token_id)
mint(token_id) <- DuplicateIdentifier error

I think reverse lookup should remove the token on burn.