fix a failing test

Author: klemenfn

server/mapper/types.go

@@ -118,6 +118,8 @@ var (
 		FlareHRP:      FlareChainID,
 		CostwoHRP:     CostwoChainID,
 		LocalFlareHRP: LocalFlareChainID,
+		"flare":       FlareChainID,  // Alias for network name
+		"costwo":      CostwoChainID, // Alias for network name
 		"fuji":        CostwoChainID, // Alias for backwards compatibility with tests
 	}
 )

server/service/backend/pchain/block_test.go

@@ -21,7 +21,6 @@ import (
 	"github.com/ava-labs/avalanche-rosetta/service"
 	"github.com/ava-labs/avalanche-rosetta/service/backend/pchain/indexer"
 
-	avaconstants "github.com/ava-labs/avalanchego/utils/constants"
 	avatypes "github.com/ava-labs/avalanchego/vms/types"
 )
 
@@ -34,7 +33,8 @@ func TestFetchBlkDependencies(t *testing.T) {
 
 	ctx := context.Background()
 
-	networkID := avaconstants.MainnetID
+	// networkID := avaconstants.MainnetID
+	networkID := uint32(14) // Flare mainnet network ID
 	networkIdentifier := &types.NetworkIdentifier{
 		Blockchain: service.BlockchainName,
 		Network:    constants.MainnetNetwork,