Deleting a page and replacing with an xref evades the "deleted page" check

[shainaraskas]

Describe the bug

these two PRs didn't trigger an error for deleted pages:

elastic/docs-content#2989
elastic/docs-content#2811

both of them deleted a page, but added an equivalent xref in the sidebar. CI passed cleanly. when the PRs were merged, the pages 404'd

note: the crosslinks within the repo were already cleaned up. does the deleted page logic still trip if there are no incoming links? I want to test this but want to log this bug asap

Expected behavior

you can't run or hide from the "deleted page with no redirect" error

Steps to reproduce

No response

Tooling

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

[natasha-moore-elastic]

Another PR where a file was renamed without redirects but CI checks passed: elastic/docs-content#3318