Loading a nonexistant folder from stela throws a generic error

[slifty]

permanent-sdk/src/stela/getStelaFolder.ts

Lines 24 to 26 in 48d3436

	if (items.length === 0) {
	throw new Error('Folder not found');
	}

This general Error means that getFolder is no longer returning an HTTPStatusCode with 404 in the event a folder doesn't exist. This is unexpected behavior, and is very hard to catch for a client.