* fix(bond): always deposit requiredCollateral

This means that we have to remove the setRequiredCollateral function to avoid:
1. Publisher deposits, requiredCollateral goes up, publisher withdraws more than they deposited
2. Publisher deposits, fraud happens, requiredCollateral goes up, more than the user's deposit gets
distributed in fraud claims

* fix(bond): remove redundant batchIndex parameter

* feat(bond): claim from Publisher instead of state root

This forces a 1:1 connection between a publisher's bond and a state root being claimed

* feat(bond): set the earliest state root
Co-authored-by: ben-chain <ben@pseudonym.party>