The "Still need help" AAQ widget is not removed from the search results page if subscription only is set and no unsubscribed redirect product is set

[emilghittasv]

Preconditions
Sign in to SUMO with an admin account.

Steps to reproduce
Steps to reproduce the behavior:

1. Go to https://support.allizom.org/admin/products/productsupportconfig/4/change/ (or any other product support configuration admin page)
2. Check the Subscription only checkbox.
3. Ensure that no option is selected inside the Unsubscribed redirect product: dropdown.
4. Save the changes.
5. Navigate to the https://support.allizom.org/en-US/ page.
6. Type a search term inside the search field that is going to return 0 search results.
7. Click on the Mozilla VPN product from the Filter by product section.
8. Scroll to the bottom of the page and click on the Get support button from the Still need help widget.

Expected behavior
The Still need help widget is not displayed since no Unsubscribed redirect product selection was performed in step 3.

Actual behavior
404

Screencasts

Desktop:

• OS: Windows 11
• Browser: Firefox

Additional context
This issue is reproducible in stage.

[emilghittasv]

I can confirm that:

For products which do not have an unsubscribed redirect product and the user is not subscribed:

• The AAQ widget is not displayed inside the search results page.
• The AAQ widget is not displayed inside the kb article page.
• The AAQ widget is not displayed inside the product topic listing page.
• The AAQ widget is not displayed inside the product landing page.

For products which do not have an unsubscribed redirect product and the user is subscribed:

• The AAQ widget is displayed inside the product topic listing page (and redirects to the Zendesk support channel)
• The AAQ widget is displayed inside the kb article page (and redirects to the Zendesk support channel)
• The AAQ widget is displayed inside the product landing page (and redirects to the Zendesk support channel)
• The AAQ widget is displayed inside the search results page (and redirects to the Zendesk support channel)

For products which have an unsubscribed redirect product and the user is not subscribed:

• The AAQ widget is displayed inside the product landing page (and redirects the user to the redirect product support configuration)
• The AAQ widget is displayed inside the search results page (and redirects the user to the redirect product support configuration)
• The AAQ widget is not displayed inside both the product topic listing page and inside kb articles belonging to the subscription only product -> Filled The AAQ widget is not displayed for subscription only products inside the product topic listing page and inside kb articles for users which are not subscribed #2987

For products which have an unsubscribed redirect product and the user is subscribed:

• The AAQ is displayed inside the product landing page (and redirects to the correct Zendesk support configuration)
• The AAQ widget is displayed inside kb articles belonging to the subscription only product (and redirects to the correct Zendesk support configuration)
• The AAQ widget is displayed inside the topic listing page (and redirects to the correct Zendesk support configuration).
• The AAQ widget is displayed inside search results (and redirects to the correct Zendesk support configuration)

I am moving this ticket inside the release column.