Impossible to remove / redirect document (appears duplicate) when using yarn tool delete slug locale --redirect newslug - heir of #6226

[SphinxKnight]

Summary

The removal tool does not work in some conditions.
When removing macros and targeting conflicting pages, I used

yarn tool delete conflicting/Web/API/WebRTC_API_d8621144cbc61520339c3b10c61731f0 fr --redirect Web/API/WebRTC_API

but this did not work: "error: unable to remove and redirect a document with children" (while this doc had no children)
Removing the redirect option displayed:

Will remove 2 documents:
conflicting/Web/API/WebRTC_API_d8621144cbc61520339c3b10c61731f0
conflicting/Web/API/WebRTC_API_d8621144cbc61520339c3b10c61731f0
Deleting without a redirect. Consider using the --redirect option with a related page instead

URL

Not applicable :/

Reproduction steps

1. Get a fresh repo and a copy of mdn/translated-content
2. Run yarn tool delete conflicting/Web/API/WebRTC_API_d8621144cbc61520339c3b10c61731f0 fr --redirect Web/API/WebRTC_API

Expected behavior

The command completes and it removes the page/adds the redirect

Actual behavior

An error since the tool believes there are either two pages (when no redirect options is used) or that there is a child for this page.

Device

Laptop

Browser

Other (specify below)

Browser version

Other version (specify below)

Operating system

Linux

Screenshot

Anything else?

• It works on 3efd1affb (i.e. before perf(build): use fdir instead of glob #6146)
  
• perf(build): use fdir instead of glob #6146
• Bug: content remove command thinks there's two of the same page #6226
• Fix find children #6233
• I do not have time to propose a fix today, will do it later.

Validations

• I have read the Community Participation Guidelines.
• I have verified that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• I have checked that this is a concrete bug. For Q&A open a GitHub Discussion.