Update the Makefile to use localhost in the default pocket node URL

[adshmh]

Summary

Update the Makefile to use localhost in the default pocket node URL.

Issue

Using the loopback address 127.0.0.1 instead of localhost results in an error when sending TXs on some LocalNet setups:

e.g.:

poktrolld tx bank send $addr $PNF_ADDRESS 1000upokt --yes --home=${POKTROLLD_HOME} --node=${POCKET_NODE}

Results in the following error:

rpc error: code = InvalidArgument desc = invalid Bech32 prefix; expected cosmos, got pokt: invalid request

This also breaks E2E tests as acc_initialize_pubkeys Makefile target used in the E2E tests runs commands similar to the above to fund the accounts.

Type of change

Select one or more from the following:

• New feature, functionality or library
• Consensus breaking; add the consensus-breaking label if so. See [Infra] Automatically add the consensus-breaking label #791 for details
• Bug fix
• Code health or cleanup
• Documentation
• Other (specify)

Testing

• Documentation: make docusaurus_start; only needed if you make doc changes
• Unit Tests: make go_develop_and_test
• LocalNet E2E Tests: make test_e2e
• DevNet E2E Tests: Add the devnet-test-e2e label to the PR.

Sanity Checklist

• I have tested my changes using the available tooling
• I have commented my code
• I have performed a self-review of my own code; both comments & source code
• I create and reference any new tickets, if applicable
• I have left TODOs throughout the codebase, if applicable

[Olshansk]

Suggested change

	# # rpc error: code = InvalidArgument desc = invalid Bech32 prefix; expected cosmos, got pokt: invalid request
	# rpc error: code = InvalidArgument desc = invalid Bech32 prefix; expected cosmos, got pokt: invalid request