prysmctl testnet generate-genesis flag --override-eth1data can't set latest value

[0xWilliamWang]

Describe the bug

When all beacon chains are shut down, the execution client cannot continue to produce blocks. One method is to obtain the latest EVM block from an existing execution client and use it to create a new beacon chain to continue running.

Using the prysmctl testnet generate-genesis flag --override-eth1data cannot set the correct latest information, which results in the beacon chain failing to start.

1. prysm/cmd/prysmctl/testnet/generate_genesis.go

   Line 314 in 97f416b

   header, err := client.HeaderByNumber(ctx, big.NewInt(0))

2. It should be necessary to fill in the latest execution payload header information.

Has this worked before in a previous version?

🔬 Minimal Reproduction

No response

Error

Platform(s)

No response

What version of Prysm are you running? (Which release)

develop branch

Anything else relevant (validator index / public key)?

No response