[MINOR] Try to fix renter doesn't know host NDF

MERGE REQUEST

MR Guidelines

Overview

This MR changes the knowsHost check to not only check against active hosts but to check if the host exists in the hostdb at all.

Checklist

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

• All new methods or updated methods have clear docstrings
• Testing added or updated for new methods
• Any new packages are added to Makefile and .gitlab-ci.yml
• API documentation updated for API updates
• Module README.md updated for changes to workflow
• Issue added to Sia-UI repo for new supporting features
• Changelog File Created

Issues Closed