params: devnet config fix

[protolambda]

Fix the devnet config.

Based on chaosnet PR, which fixes the dumpgenesis command.

Verify with:

curl https://storage.googleapis.com/oplabs-network-data/internal-devnet/genesis.json > tmp/devnet_genesis.json
go run ./cmd/geth init --datadir=tmp/devnetdata tmp/devnet_genesis.json
go run ./cmd/geth dumpgenesis --datadir=tmp/devnetdata > tmp/devnet_dump_genesis.json
diff <(jq --sort-keys . tmp/devnet_genesis.json) <(jq --sort-keys . tmp/devnet_dump_genesis.json)

go run ./cmd/geth dumpgenesis --beta.op-network=op-labs-devnet-0-goerli-dev-0 > tmp/superchain_devnet_dump_genesis.json
diff <(jq --sort-keys . tmp/devnet_genesis.json) <(jq --sort-keys . tmp/superchain_devnet_dump_genesis.json)

The existing devnets did not adopt the previous malformed superchain-registry sourced configuration yet, it reports eip1559Elasticity=10.

# 1) port-forward to the devnet sequencer
# 2) pull chain config:
cast rpc --rpc-url=http://localhost:8545 debug_chainConfig

{"chainId":997,"homesteadBlock":0,"eip150Block":0,"eip155Block":0,"eip158Block":0,"byzantiumBlock":0,"constantinopleBlock":0,"petersburgBlock":0,"istanbulBlock":0,"muirGlacierBlock":0,"berlinBlock":0,"londonBlock":0,"arrowGlacierBlock":0,"grayGlacierBlock":0,"mergeNetsplitBlock":0,"bedrockBlock":0,"regolithTime":1677984480,"terminalTotalDifficulty":0,"terminalTotalDifficultyPassed":true,"optimism":{"eip1559Elasticity":10,"eip1559Denominator":50}}