pages tagged with serverless only get an incorrect current version in the dropdown

[shainaraskas]

Describe the bug

any page tagged with only serverless gets a current verison of 99999.0 displaying in the dropdown

examples:

https://www.elastic.co/docs/deploy-manage/users-roles/serverless-custom-roles
https://www.elastic.co/docs/deploy-manage/deploy/elastic-cloud/manage-serverless-projects-using-api
https://www.elastic.co/docs/solutions/observability/observability-serverless-feature-tiers

Expected behavior

the dropdown is hidden, like we do for ech

example:

https://www.elastic.co/docs/deploy-manage/users-roles/cloud-organization

Steps to reproduce

front matter

---
mapped_pages:
  - https://www.elastic.co/guide/en/serverless/current/custom-roles.html
applies_to:
  serverless: ga
products:
  - id: cloud-serverless
---

or no mapped pages

---
navigation_title: Serverless feature tiers
applies_to:
  serverless: ga
products:
  - id: observability
---

Tooling

• docs-builder
• migration tooling
• I'm not sure

[shainaraskas]

fixed by #2383