Increase Thornode PVC

This change will set the default strategy to start nodes from a statesync snapshot, which should reduce the initial chain state size to about 20G currently. In the meantime for existing nodes that have large chain state this increases the PVC size by 50% to give headroom.

I think the better longer term solution for this would be enabling pruning in thornode, I have a node syncing so I can test this and will open a corresponding PR in thornode following that. Will leave this in draft in the meantime in case we opt to just go the pruning route.