chore(nodebuilder/p2p)! Upgrade to mocha-3 (#2432)

## Overview

Update to mocha-3 chain name when init is called.

## Checklist

- [ ] New and updated code has appropriate documentation
- [ ] New and updated code has new and/or updated testing
- [ ] Required CI checks are passing
- [ ] Visual proof for any user facing features like CLI or
documentation updates
- [ ] Linked issues closed with keywords

nodebuilder/p2p/genesis.go

@@ -24,7 +24,7 @@ func GenesisFor(net Network) (string, error) {
 // NOTE: Every time we add a new long-running network, its genesis hash has to be added here.
 var genesisList = map[Network]string{
 	Arabica:        "7A5FABB19713D732D967B1DA84FA0DF5E87A7B62302D783F78743E216C1A3550",
-	Mocha:          "1181AF8EAE5DDF3CBBFF3BF3CC44C5B795DF5094F5A0CC0AE52921ECCA0AF3C8",
+	Mocha:          "79A97034D569C4199A867439B1B7B77D4E1E1D9697212755E1CE6D920CDBB541",
 	BlockspaceRace: "1A8491A72F73929680DAA6C93E3B593579261B2E76536BFA4F5B97D6FE76E088",
 	Private:        "",
 }

nodebuilder/p2p/network.go

@@ -14,7 +14,7 @@ const (
 	// Arabica testnet. See: celestiaorg/networks.
 	Arabica Network = "arabica-9"
 	// Mocha testnet. See: celestiaorg/networks.
-	Mocha Network = "mocha-2"
+	Mocha Network = "mocha-3"
 	// BlockspaceRace testnet. See: https://docs.celestia.org/nodes/blockspace-race/.
 	BlockspaceRace Network = "blockspacerace-0"
 	// Private can be used to set up any private network, including local testing setups.