StaticATokenLM::_claimRewardsOnBehalf: wrong update of _unclaimedRewards[onBehalfOf] if reward > totBal lead to user lose of pending rewards.

Lines of code Vulnerability details Description If for some reason the current contract reward token balance is lower than the rewards meant to be paid to onBehalf address, then this rewards can never be claimed. function claimRewardsOnBehalf address onBehalfOf, address receiver, bool forceUpdate...