Gloas: state reconstruction

[michaelsproul]

Description

Need to wire up state reconstruction using the DB machinery added in:

• Update database and block replayer to handle payload envelopes #8886

Depends on having a working cold DB:

• Gloas: cold DB #8958

[michaelsproul]

Working and tested in:

• Gloas spec v1.7.0-alpha.5 and beacon_chain tests #8998