Wallet Force Init with no previous wallet

MERGE REQUEST

Overview

Previously /wallet/init force=true would return an error if a wallet hadn't previously been created and encrypted. This MR removes the check for an encrypted wallet so that it can be called by developers regardless of if a wallet was previously created.

Example for Visual changes (ie Screenshot)

N/A

Issues Closed

Helps with a UI path for Eddie.

Checklist

Review and complete the checklist to ensure that the MR is complete before assigned to an approver.

• All new methods, or updating methods have clear docstrings
• Testing added or updated for new methods
• API documentation updated for API updates
• Module README.md updated for changes to work flow
• Issue added to Sia-UI repo for new supporting features