RewardThrottle.checkRewardUnderflow can't distribute rewards because fillInEpochGaps updates activeEpoch when RewardThrottle is inactive

Lines of code Vulnerability details Impact RewardThrottle.checkRewardUnderflow can't distribute rewards because activeEpoch can be updated to a new one. Proof of Concept RewardThrottle.checkRewardUnderflow distributes rewards only when RewardThrottle is active. function checkRewardUnderflow publi...