Custom commands fail for 7.4

https://www.drupal.org/pift-ci-job/2580975 → shows in a simple MR the problem in issue summary.

It just changed the README but that also has an existing spelling problem so it fails in 10.1 also

but only 9.5 fails with

--- Output ---
Creating list of files to check by comparing branch to 9.5.x
Drupal's JavaScript development dependencies are not installed or cannot be resolved. Run 'yarn install' inside the core directory, or 'yarn check -s' to list other errors.
--- Errors ---

Pushing up another commit to try to get 10.1 to pass

So obviously I introduced this with 🐛 phpcs stopped working since the switch to testing on Drupal 10.0.x by default Fixed 😬

What a nightmare.

I'm this close to working on a core issue that makes it possible for contrib projects to reuse core/scripts/dev/commit-code-check.sh 😬

Except … I do not see this in the 9.5/PHP 7.4 runs I did:

• https://dispatcher.drupalci.org/job/drupal8_contrib_patches/142476/console (see #3325654-32: Improve the user experience of having your staged update deleted before it was applied → )
• https://dispatcher.drupalci.org/job/drupal8_contrib_patches/142459/console (see 🐛 phpcs stopped working since the switch to testing on Drupal 10.0.x by default Fixed )

So … okay, this needs further investigation…

I couldn't find the cause nor could I reproduce, and seems @tedbow concluded the same: https://drupal.slack.com/archives/C7QJNEY3E/p1675167342776979

So, closing, because this seems to have been an ephemeral DrupalCI problem…