[OP Stack Deployment] L2 Rollup with Custom gas token

[priyanshuthapliyal55]

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Issue Description

Using Feat/custom-gas-token branchfor deploy L2 rollups in testnet (Sepolia) with custom gas token but getting this error when trying to create l2 genesis and rollups.json.
./bin/op-node genesis l2 --l1-rpc $L1_RPC_URL --deploy-config ../packages/contracts-bedrock/deploy-config/testnet.json --l2-allocs ../packages/contracts-bedrock/l2.json --l1-deployments ../packages/contracts-bedrock/deployments/testnet/.deploy --outfile.l2 genesis.json --outfile.rollup rollup.json
t=2024-05-03T16:53:20+0000 lvl=info msg="Deploy config" path=../packages/contracts-bedrock/deploy-config/testnet.json
t=2024-05-03T16:53:21+0000 lvl=warn msg="L2OutputOracleStartingBlockNumber is 0, should only be 0 for fresh chains"
t=2024-05-03T16:53:21+0000 lvl=warn msg="GasPriceOracleBaseFeeScalar is 0"
t=2024-05-03T16:53:21+0000 lvl=warn msg="GasPriceOracleBlobBaseFeeScalar is 0"
t=2024-05-03T16:53:21+0000 lvl=warn msg="RequiredProtocolVersion is empty"
t=2024-05-03T16:53:21+0000 lvl=warn msg="RecommendedProtocolVersion is empty"
t=2024-05-03T16:53:21+0000 lvl=info msg="Using custom gas token" address=0xE7E4cfc05Ca6700ae4D826e1c4C2395A966f8369
t=2024-05-03T16:53:21+0000 lvl=info msg="Using L1 Start Block" number=5828720 hash=0xf9dcf26e33cca431ac969e4ff7a7b73c4ee238e4b026e1706cce054e85352f62
t=2024-05-03T16:53:21+0000 lvl=crit msg="Application failed" message="error creating l2 genesis: predeploy 4200000000000000000000000000000000000000 is missing from L2 genesis allocs"

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