fix: track total delegated tokens changes when rewards or fees are collected

Author: pcarranzav

src/mappings/rewardsManager.ts

@@ -85,6 +85,7 @@ export function handleRewardsAssigned(event: RewardsAssigned): void {
   graphNetwork.totalIndexingDelegatorRewards = graphNetwork.totalIndexingDelegatorRewards.plus(
     delegatorIndexingRewards,
   )
+  graphNetwork.totalDelegatedTokens = graphNetwork.totalDelegatedTokens.plus(delegatorIndexingRewards)
   graphNetwork.save()
 }
 

src/mappings/staking.ts

@@ -659,6 +659,7 @@ export function handleRebateClaimed(event: RebateClaimed): void {
   graphNetwork.totalUnclaimedQueryFeeRebates = graphNetwork.totalUnclaimedQueryFeeRebates.minus(
     event.params.delegationFees.plus(event.params.tokens),
   )
+  graphNetwork.totalDelegatedTokens = graphNetwork.totalDelegatedTokens.plus(event.params.delegationFees)
   graphNetwork.save()
 }
 
@@ -742,6 +743,7 @@ export function handleRebateCollected(event: RebateCollected): void {
   graphNetwork.totalUnclaimedQueryFeeRebates = graphNetwork.totalUnclaimedQueryFeeRebates.minus(
     event.params.delegationRewards.plus(event.params.queryRebates),
   )
+  graphNetwork.totalDelegatedTokens = graphNetwork.totalDelegatedTokens.plus(event.params.delegationRewards)
   graphNetwork.save()
 }