revert: undo custom-domains page changes at lines 122-133

Agent-Logs-Url: https://github.com/medusajs/medusa/sessions/a67d0bf1-9f05-4d09-9ff3-be16bb15e76c

Co-authored-by: shahednasser <27354907+shahednasser@users.noreply.github.com>

Author: Copilot

www/apps/cloud/app/environments/custom-domains/page.mdx

@@ -50,12 +50,6 @@ To set up a backend custom domain:
 
 You can track your domain's setup progress with the [Domain Status Indicators](#domain-status-indicators).
 
-<Note>
-
-Once a custom domain is configured, the **Add Domain** button will be hidden to prevent duplicate entries. If you need to change the domain, you must first remove the existing domain.
-
-</Note>
-
 ### Update Backend Domain in Storefront
 
 To avoid downtime in you storefront while DNS changes propagate for your backend's custom domain, Medusa doesn't update the backend URL set in the storefront automatically. The storefront will still point to the backend's original subdomain.
@@ -125,21 +119,14 @@ If no custom domain is configured for your storefront environment, you'll see a
 2. Click on the environment card where you want to set up the custom domain.
 3. Click the **Settings** tab.
 4. Navigate to the **Domains** section.
-5. If no custom domain is configured, you'll see an informational alert explaining how custom domains provide storefront support.
-6. Click the **Add Domain** button.
-7. In the modal that opens:
+5. Click the **Add Domain** button.
+6. In the modal that opens:
    - **Domain Step**: Enter your custom domain name (for example, `shop.acme.com`)
    - **DNS Setup**: Follow the instructions to add the required DNS records with your domain provider
-8. Click **Done** to complete the setup.
+7. Click **Done** to complete the setup.
 
 You can track your domain's setup progress with the [Domain Status Indicators](#domain-status-indicators).
 
-<Note>
-
-Once a custom domain is configured, the **Add Domain** button will be hidden to prevent duplicate entries. If you need to change the domain, you must first remove the existing domain.
-
-</Note>
-
 ---
 
 ## Domain Status Indicators