stake() in eigenPodManager will failed when msg.sender had not eigenPod

[macrocan]

Describe the bug
stake() in eigenPodManager will failed when msg.sender had not eigenPod

To Reproduce
Steps to reproduce the behavior:

1. generate beacon stake deposit-data
2. https://holesky.etherscan.io/address/0x30770d7E3e71112d7A6b7259542D1f680a70e315#writeProxyContract
3. find stake()

cause
DepositDataRoot in deposit-data will digit serval elements which include withdrawal credentials, user can't know his eigenpod(still not existed) address in advance.