No repay debt requirement for DeclareFaultsRecovered

[irenegia]

Remove the requirement to repay debt from DeclareFaultsRecovered.

[zixuanzh]

There is a potential product concern here which is that the protocol does want miners to recover as soon as possible. However, I still think this FIP is fine because the penalty stops when the miner has recovered the data and hence there is still guarantee to the storage client even though the miner may not be able to produce blocks until debt is paid. cc @pooja

[momack2]

I don't think your logic lines up here, @zixuanzh. The protocol wants the miner to recover their sectors as soon as possible - however blocking the miner on declaring the recovery due to a debt actually makes that much harder - increasing the chances the miner ends up in a downward spiral that causes them to lose all deals/sectors. Landing this FIP makes it easier for miners to recover their sectors and repay a more manageable debt (which they are still highly incentivized to do) - increasing storage performance overall.