Sleep peer if can't get account range

[asdacap]

• Sometimes, depending on your luck, a proportion of the snap account range response returns nothing, which get interpreted as ExpiredRootHash. Sometimes its a lot, but I can't reproduce it.
• For geth, this happen if the state root is missing which will happen if we request too newer state root or geth is lagging behind.
• No idea about besu.
• In any case, I'd recommend just return NoProgress which should sleep the peer, which should cause the account range request to go to other peer, at least temporarily, which should help a bit with snap sync request if you get unlucky.

Changes

• Slight cleanup on snap sync feed constructor.
• Add a small clause to return NoProgress

Types of changes

What types of changes does your code introduce?

• Bugfix (a non-breaking change that fixes an issue)
• Optimization

Testing

Requires testing

• Yesx

If yes, did you write tests?

• Yes

[LukaszRozmej]

How much does it decreases re-pivoting?

[asdacap]

No idea. I'm guessing it should decrease it. In any case, it will reliably re-pivot after 90-something block.