[BUG REPORT] Does not filter pruned nodes.

[DragonDmoney]

Describe the bug
Some blocks are unqueriable

To Reproduce

from pypocket.pokt import PoktRPCDataProvider

rpc_url = "https://mainnet.gateway.pokt.network/v1/lb/<application>"
pokt_rpc = PoktRPCDataProvider(rpc_url)

nodes = pokt_rpc.get_nodes(height=2, per_page=1)

Code: 400 – Message: error loading store: KVStoreKey{0xc002d34840, pocketcore}, in LoadLazyVersion: version does not exist
If I were to guess the cause of this issue is that the gateway does not make sure that a node isn't pruned (no archival queries). Not all nodes are pruned so it may take a couple tries to get this error.

[crisog]

This is something that is also true for other blockchains, such as archival ethereum or any other archival. The idea was to implement an "archival check" in such way that it can be re-utilized on any archival chain, the same way the sync check does.

I think the issue is #74