bug: Link to subpage of hidden=1 and extendToSubpages=1 is detected as "ok"

[sypets]

Describe the bug

A link to this page should be detected as broken. Should also check subpages of startime, endtime, fe_group.

Should also check behaviour in linkvalidator.

To Reproduce
Steps to reproduce the behavior:

1. Create a page with hidden=1 and extendToSubpages=1
2. Create a not hidden subpage of this page
3. Create a page link to this page
4. Run check links

Expected behavior

The page link should be detected as 404.

Actual behavior

Link is detected as "ok"

System (please complete the following information):

• TYPO3 version: 12.4.27
• brofix version: latest main
• installed with Composer? yes

Issue in linkvalidator:

• https://forge.typo3.org/issues/106675