CIP-0013: Correct an error in the Daml models controlling the re-onboarding process for Super Validators who have been removed from the quorum. The error allowed Super Validators to mint Canton Coin greater than their agreed share after being removed and returned to the quorum.

This Canton Improvement Proposal, CIP-0013, aims to correct an error in the Daml models that allowed Super Validators to mint more Canton Coin than their allocated share after being removed and returned to the quorum. The proposed fix updates the re-onboarding process to reuse existing reward state contracts instead of creating new ones, preventing duplicate minting of rewards. By implementing this change, the network can ensure accurate reward issuance and maintain the integrity of the Canton Coin allocation process.