Several schema definitions in wrong sub-modules

There is another issue, several processor schemas are not defined/missing after 🐛 Config schema fix Active :
- hide_active_items_processor
- hide_1_result_facet
- list_item
- show_only_deepest_level_items_processor
- translate_entity_aggregated_fields
- uid_to_username_callback

Should we extend the scope here?

The demo module requires views_ajax_history → but it's not listed in composer.json so the tests fail.

It then failed because views_filters_summary was required.

There are still some actual test failures:

Drupal\Tests\facets\Unit\FacetSource\FacetSourcePluginManagerTest:

    Facet Source Plugin Manager (Drupal\Tests\facets\Unit\FacetSource\FacetSourcePluginManager)
     ⚠ Construct
     ✔ Get definitions
     ✘ Invalid definitions with only·id
       ┐
       ├ Error: Unknown named parameter $id
    
       ┴
     ✘ Invalid definitions with only·display_id
       ┐
       ├ Error: Unknown named parameter $display_id
    
       ┴
     ✘ Invalid definitions with only·label
       ┐
       ├ Error: Unknown named parameter $label
    
       ┴
     ✘ Invalid definitions with no·label
       ┐
       ├ Error: Unknown named parameter $id

Drupal\Tests\facets\Kernel\FacetManager\DefaultFacetManagerTest:

    Default Facet Manager (Drupal\Tests\facets\Kernel\FacetManager\DefaultFacetManager)
     ⚠ Get enabled facets
     ⚠ Get facets by facet source id
     ⚠ Alter query cacheability metadata
     ✘ Build cacheability metadata with 0
       ┐
       ├ Drupal\Core\Config\Schema\SchemaIncompleteException: Schema errors for facets.facet.mars with the following errors: facets.facet.mars:processor_configs.fpc_build_processor.settings missing schema, facets.facet.mars:processor_configs.fpc_post_query_processor.settings missing schema, facets.facet.mars:processor_configs.fpc_sort_processor.settings missing schema
       │
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Config/Development/ConfigSchemaChecker.php:98
       │ /builds/issue/facets-3544226/vendor/symfony/event-dispatcher/EventDispatcher.php:206
       │ /builds/issue/facets-3544226/vendor/symfony/event-dispatcher/EventDispatcher.php:56
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Config/Config.php:232
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Config/Entity/ConfigEntityStorage.php:260
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Entity/EntityStorageBase.php:487
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Config/Entity/ConfigEntityStorage.php:239
       │ /builds/issue/facets-3544226/tests/src/Kernel/FacetManager/DefaultFacetManagerTest.php:215
       ┴
     ✘ Build cacheability metadata with 1
       ┐
       ├ Drupal\Core\Config\Schema\SchemaIncompleteException: Schema errors for facets.facet.mars with the following errors: facets.facet.mars:processor_configs.fpc_build_processor.settings missing schema, facets.facet.mars:processor_configs.fpc_post_query_processor.settings missing schema, facets.facet.mars:processor_configs.fpc_sort_processor.settings missing schema
       │
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Config/Development/ConfigSchemaChecker.php:98
       │ /builds/issue/facets-3544226/vendor/symfony/event-dispatcher/EventDispatcher.php:206
       │ /builds/issue/facets-3544226/vendor/symfony/event-dispatcher/EventDispatcher.php:56
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Config/Config.php:232
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Config/Entity/ConfigEntityStorage.php:260
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Entity/EntityStorageBase.php:487
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Config/Entity/ConfigEntityStorage.php:239
       │ /builds/issue/facets-3544226/tests/src/Kernel/FacetManager/DefaultFacetManagerTest.php:215
       ┴
     ✘ Build cacheability metadata with 2
       ┐
       ├ Drupal\Core\Config\Schema\SchemaIncompleteException: Schema errors for facets.facet.mars with the following errors: facets.facet.mars:processor_configs.fpc_build_processor.settings missing schema, facets.facet.mars:processor_configs.fpc_post_query_processor.settings missing schema, facets.facet.mars:processor_configs.fpc_sort_processor.settings missing schema
       │
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Config/Development/ConfigSchemaChecker.php:98
       │ /builds/issue/facets-3544226/vendor/symfony/event-dispatcher/EventDispatcher.php:206
       │ /builds/issue/facets-3544226/vendor/symfony/event-dispatcher/EventDispatcher.php:56
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Config/Config.php:232
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Config/Entity/ConfigEntityStorage.php:260
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Entity/EntityStorageBase.php:487
       │ /builds/issue/facets-3544226/web/core/lib/Drupal/Core/Config/Entity/ConfigEntityStorage.php:239
       │ /builds/issue/facets-3544226/tests/src/Kernel/FacetManager/DefaultFacetManagerTest.php:215
       ┴

I didn't dig much further tbh because if I'm not mistaken the report is the same as 3.0.x https://git.drupalcode.org/project/facets/-/pipelines/582244
So this is probably out of scope here and deserves its own issue?
Thanks for looking into it.

The issues in DefaultFacetManagerTest appear to be more missing schema, this time in the facets_processors_collection test module, so is relevant for this issue; I don't know about the other one, I haven't dug into it yet.