chore(stats): properly count the number of keys in the reports table …

…before marking gateway as failed

src/epochs.lua

@@ -402,7 +402,7 @@ function epochs.distributeRewardsForEpoch(currentTimestamp)
 	local totalEligibleRewards = math.floor(balances.getBalance(ao.id) * epochs.getSettings().rewardPercentage)
 	local gatewayReward = math.floor(totalEligibleRewards * 0.95 / #activeGatewayAddresses)
 	local observerReward = math.floor(totalEligibleRewards * 0.05 / #prescribedObservers)
-	local totalObservationsSubmitted = #epoch.observations.reports or 0
+	local totalObservationsSubmitted = utils.lengthOfTable(epoch.observations.reports) or 0
 
 	-- check if already distributed rewards for epoch
 	if epoch.distributions.distributedTimestamp then