[1.0.2 -> main] Remove explicit net_plugin pause during snapshot

[heifner]

As noted on the addition of pausing during snapshot:
https://github.com/AntelopeIO/leap/pull/2029/files#r1440851488

Pausing does cause peers to disconnect. You have to wait on the connection timer to reconnect and continue syncing.

Now that we no longer sync ahead: #635
The issue AntelopeIO/leap#2021 is not an issue anymore as we do not keep syncing ahead. The sync is limited by the sync-fetch-span.

Tested with EOS Mainnet node syncing and with an EOS Mainnet node in-sync.

Merges release/1.0 into main including #768

Resolves #592

[ericpassmore]

Note:start
category: Other
component: Plugins/Cleos/Utils
summary: No longer pause syncing during snapshot, main thread is no longer tied up during snapshot.
Note:end