/eth/v1/validator/duties/sync does not handle future slot

[mcdee]

🐞 Bug Report

Description

A call to /eth/v1/validator/duties/sync with a future slot returns an error when it should not.

The slot should be considered valid if it is in the current or next sync epoch, with the next sync epoch being in the future.

Has this worked before in a previous version?

No.

🔬 Minimal Reproduction

POST to /eth/v1/validator/duties/sync with a slot in the future.

🔥 Error

{
  "message": "Could not get sync committee state: slot cannot be in the future",
  "code": 500
}

🌍 Your Environment

develop

[rkapka]

This can be closed. The wrong issue was reopened.