[meta] Add constraints to all simple configuration

We're well on our way now.

See https://www.drupal.org/node/3404425 → . Thanks to 📌 Automated report on core config validatability Needs review and 📌 Improve #3391990: add % labels, surface (fully) validatable object counts, debug the sudden decline post Fixed we now know automatically which are the currently fully validatable

• config types:
  

      "fullyValidatable": {
        "count": 5,
        "list": [
          "block.settings.local_tasks_block",
          "block.settings.system_branding_block",
          "node.type.*",
          "shortcut.set.*",
          "system.menu.*"
        ]
      },
  

• and objects:
  

      "fullyValidatable": {
        "count": 8,
        "list": [
          "node.type.article",
          "node.type.page",
          "shortcut.set.default",
          "system.menu.account",
          "system.menu.admin",
          "system.menu.footer",
          "system.menu.main",
          "system.menu.tools"
        ]
      },
  

Among those, there are currently zero simple config objects. But 📌 Follow-up for #3364109: opt in already validatgable simple config to FullyValidatable Active is changing that, because we have multiple fully validatable simple config that simply has not yet been marked as such because the API did not exist yet.

Once 📌 Follow-up for #3364109: opt in already validatgable simple config to FullyValidatable Active lands, these 6 simple config are explicitly fully validatable (they already are today):

1. comment.settings
2. menu_ui.settings
3. node.settings
4. system.maintenance
5. system.feature_flags
6. taxonomy.settings

However, this issue still surfaced one additional need not yet met: a definition of done. I think that the definition here is: all type: config_object subtypes in Drupal core must have the FullyValidatable constraint on them.

Before creating that listing by hand, let's first focus on the simple config that is part of the Standard install profile. That's what https://project.pages.drupalcode.org/config_inspector/ is currently visualizing.

📌 Follow-up for #3364109: opt in already validatgable simple config to FullyValidatable Active landed!

Had some fun with drush and the config.typed service to semi-automate keeping this plan issue up-to-date 😊

Oops, that was done against 📌 Add validation constraints to book.settings Needs review 😅

Rather than listing explicit issues in the summary, please see the child issues in the sidebar — that makes it easier to keep this up-to-date.

Core just gained new simple config: layout_builder.settings was added in 🐛 Reduce the number of field blocks created for entities (possibly to zero) Needs review and being marked validatable in [#3426429.

Last update of IS was on Feb 21. Updated for current state 👍

Updated stats in the issue summary again. Big bump! 🥳

Exactly half of Standard's simple config is now fully validatable!

📌 Add validation constraints to field_ui.settings Needs review landed!

sdc_tags.settings in above list does not seems to be part of core.

#32: You're right! This was due to a contrib module I was testing. Apologies, fixed that!

In the mean time, two more have landed:

1. 📌 Add validation constraints to system.date Fixed
2. 📌 Add validation constraints to system.advisories Fixed