polish(api): expose filReserveDisbursed via CirculatingSupply API

- motivated by: https://github.com/filecoin-project/sentinel-visor/issues/462

api/api_full.go

@@ -999,11 +999,12 @@ type DealCollateralBounds struct {
 }
 
 type CirculatingSupply struct {
-	FilVested      abi.TokenAmount
-	FilMined       abi.TokenAmount
-	FilBurnt       abi.TokenAmount
-	FilLocked      abi.TokenAmount
-	FilCirculating abi.TokenAmount
+	FilVested           abi.TokenAmount
+	FilMined            abi.TokenAmount
+	FilBurnt            abi.TokenAmount
+	FilLocked           abi.TokenAmount
+	FilCirculating      abi.TokenAmount
+	FilReserveDisbursed abi.TokenAmount
 }
 
 type MiningBaseInfo struct {

chain/stmgr/stmgr.go

@@ -1279,11 +1279,12 @@ func (sm *StateManager) GetVMCirculatingSupplyDetailed(ctx context.Context, heig
 	}
 
 	return api.CirculatingSupply{
-		FilVested:      filVested,
-		FilMined:       filMined,
-		FilBurnt:       filBurnt,
-		FilLocked:      filLocked,
-		FilCirculating: ret,
+		FilVested:           filVested,
+		FilMined:            filMined,
+		FilBurnt:            filBurnt,
+		FilLocked:           filLocked,
+		FilCirculating:      ret,
+		FilReserveDisbursed: filReserveDisbursed,
 	}, nil
 }