[1.0-beta1.2 -> main] P2P: Fix stuck in lib catchup

[heifner]

Test failure #190. The test creates a large fork and reestablishes the network between two large forked nodes. While the producer D was syncing into the network (which a very small sync-fetch-span == 5) it got stuck in lib catchup. Since it thought it was in lib catchup it would not send its produced blocks.

• Fix for continuing to sync from a peer when we are receiving a group of blocks that we have already completely received. Go ahead and get the next range as the next range of blocks could be needed to resolve a large fork.

Merges release/1.0-beta1 into main including #199

Resolves #190

[ericpassmore]

Note:start
group: STABILITY
category: INTERNALS
summary: Improve stability in P2P syncing for large forks with very small sync spans.
Note:end