Deprecated mb_strtolower triggered from layout_builder PHP 8.1

Problem/Motivation

Deprecated function: mb_strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in Drupal\Core\Config\Entity\Query\Condition->compile() (line 39 of core/lib/Drupal/Core/Config/Entity/Query/Condition.php).
Drupal\Core\Config\Entity\Query\Condition->compile(Array) (Line: 85)
Drupal\Core\Config\Entity\Query\Query->execute() (Line: 302)
Drupal\Core\Config\Entity\ConfigEntityBase->preSave(Object) (Line: 207)
Drupal\filter\Entity\FilterFormat->preSave(Object) (Line: 562)
Drupal\Core\Entity\EntityStorageBase->doPreSave(Object) (Line: 517)
Drupal\Core\Entity\EntityStorageBase->save(Object) (Line: 253)
Drupal\Core\Config\Entity\ConfigEntityStorage->save(Object) (Line: 339)
Drupal\Core\Entity\EntityBase->save() (Line: 608)
Drupal\Core\Config\Entity\ConfigEntityBase->save() (Line: 214)
Drupal\filter\FilterFormatFormBase->submitForm(Array, Object) (Line: 33)
Drupal\filter\FilterFormatEditForm->submitForm(Array, Object)
call_user_func_array(Array, Array) (Line: 114)
Drupal\Core\Form\FormSubmitter->executeSubmitHandlers(Array, Object) (Line: 52)
Drupal\Core\Form\FormSubmitter->doSubmitForm(Array, Object) (Line: 597)
Drupal\Core\Form\FormBuilder->processForm('filter_format_edit_form', Array, Object) (Line: 325)
Drupal\Core\Form\FormBuilder->buildForm(Object, Object) (Line: 73)
Drupal\Core\Controller\FormController->getContentResult(Object, Object) (Line: 39)
Drupal\layout_builder\Controller\LayoutBuilderHtmlEntityFormController->getContentResult(Object, Object)
call_user_func_array(Array, Array) (Line: 123)

Steps to reproduce

Unsure how to reproduce this issue , but for me this occurs with D9.5.10 when saving a text format such as full text or rich text , I'm not sure what layout_builder is doing in this case.

Proposed resolution

TBD

Remaining tasks

TBD

User interface changes

TBD

API changes

TBD

Data model changes

TBD

Release notes snippet

TBD