[EAP] Custom domain for Confluence redirects to Jira

Issue Summary

Need to redirect requests to Confluence custom domains back to /wiki when landed on Jira

Please note: This feature is an Early Access Program (EAP) for custom domains for Confluence Cloud. To join the EAP, simply follow the here - CLOUD-6999

Steps to Reproduce

1. Add a custom domain for Confluence.
2. Navigate to the custom domain

Expected Results

Custom domain should redirect to /wiki

Actual Results

Custom domain for Confluence lands on Jira

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available