Add the Zendesk brand mark under ThirdParties and wire it into the logo map. Because the customer subdomain is free-form (not a fixed region list), the connect flow opens a dialog with a subdomain text input that is sanitized and passed as ?site= to the OAuth initiate endpoint, mirroring the Datadog multi-site dialog. Signed-off-by: Aurélien Sibiril <81782+aureliensibiril@users.noreply.github.com>