Bug: block download process gets stuck sometimes

[iltoga]

Description

node C download the blockchain starting from a snapshot at height 2160.

this is the flow of receipt:
at height 1445 - node A send receipt to node B
at height 2161 - node B published the receipt it got on 1445
at height 3000 - node C join, download snapshot 2160, apply onward

when node C apply block 2161, the it can't validate the receipt because it doesn't have node registry at height 1445.

Solution

include in snapshots node_registry entries to match published_receipts (all entries starting from snapshotHeight - minRollbackHeight)

Steps to reproduce

1. See description

Expected behavior

node C doesn't get stuck downloading remaining main blocks from snapshotHeight