fix: Display embedding model config in the super admin ui (#12303)

## Description

This fixes an oversight from my previous PR #12120 where I forgot to add
the config key to the enterprise config controller, leading to the
configuration not being showed in the super admin panel.

## Type of change

- [x] Bug fix (non-breaking change which fixes an issue)

## How Has This Been Tested?

I believe this is the correct code change but haven't ran a full test
due to hardware constraints. It would be ideal if you could perform a
quick check on this.

## Checklist:

- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [ ] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

enterprise/app/controllers/enterprise/super_admin/app_configs_controller.rb

@@ -10,7 +10,7 @@ module Enterprise::SuperAdmin::AppConfigsController
     when 'internal'
       @allowed_configs = internal_config_options
     when 'captain'
-      @allowed_configs = %w[CAPTAIN_OPEN_AI_API_KEY CAPTAIN_OPEN_AI_MODEL CAPTAIN_OPEN_AI_ENDPOINT CAPTAIN_FIRECRAWL_API_KEY]
+      @allowed_configs = captain_config_options
     else
       super
     end
@@ -36,4 +36,14 @@ module Enterprise::SuperAdmin::AppConfigsController
        CAPTAIN_CLOUD_PLAN_LIMITS ACCOUNT_SECURITY_NOTIFICATION_WEBHOOK_URL CHATWOOT_INSTANCE_ADMIN_EMAIL
        OG_IMAGE_CDN_URL OG_IMAGE_CLIENT_REF CLOUDFLARE_API_KEY CLOUDFLARE_ZONE_ID]
   end
+
+  def captain_config_options
+    %w[
+      CAPTAIN_OPEN_AI_API_KEY
+      CAPTAIN_OPEN_AI_MODEL
+      CAPTAIN_OPEN_AI_ENDPOINT
+      CAPTAIN_EMBEDDING_MODEL
+      CAPTAIN_FIRECRAWL_API_KEY
+    ]
+  end
 end