Wish for clarification if "config" field in genesis files can be used

[cakevm]

Most Genesis JSON files have null as config, but Unichain, for example, has a populated field. I came across #763 but am unsure if this "inconsistency" is intended and what the expected behavior will be in the future. Will only new chains have this config section, or will all Genesis files be adapted?

File: superchain/extra/genesis/mainnet/base.json.zst:

{
  "config": null,
  ...
}

File: superchain/extra/genesis/mainnet/unichain.json.zst:

{
  "config": {
    "chainId": 130,
    "homesteadBlock": 0,  
  ...
  }
  ..
}

ref: Working currently on parsing those files in reth here: paradigmxyz/reth#14562