composeAuditURL does not return the correct URL in some cases of domains with bot protection

**Description**
composeAuditURL is used in both audit and import workers to return the URL to audit/import data for.
composeAuditURL does not return the correct URL in some cases of domains with bot protection, see example in slack thread below.

An empty response from RUM/ahrefs APIs doesn't always mean we're querying for the wrong URL. e.g. broken backlinks is expected sometimes to return empty, sometimes with broken backlinks. So we cannot just assume empty response => fallback to www, like the fix implemented in https://github.com/adobe/spacecat-audit-worker/pull/248.

**Expected behavior**
composeAuditURL or a similar shared function should return a correct URL for those cases as well, and audits/imports should be updated to that version.

**Additional context**
See https://cq-dev.slack.com/archives/C05A45JBP9N/p1715068794711109

composeAuditURL: https://github.com/adobe/spacecat-shared/blob/9e0dc2cdc080411597f47319b5dcc2bedf764ada/packages/spacecat-shared-utils/src/url-helpers.js#L86