When reordering home menu item in main menu, WSOD on config staging workflow sites.

[trackleft]

Describe the bug

#0 /code/web/modules/contrib/config_readonly/src/Config/ConfigReadonlyStorage.php(79): Drupal\config_readonly\Config\ConfigReadonlyStorage->checkLock()
#1 /code/web/core/lib/Drupal/Core/Config/Config.php(226): Drupal\config_readonly\Config\ConfigReadonlyStorage->write()
#2 /code/web/core/lib/Drupal/Core/Menu/StaticMenuLinkOverrides.php(151): Drupal\Core\Config\Config->save()
#3 /code/web/core/lib/Drupal/Core/Menu/MenuLinkDefault.php(102): Drupal\Core\Menu\StaticMenuLinkOverrides->saveOverride()
#4 /code/web/core/lib/Drupal/Core/Menu/MenuLinkManager.php(330): Drupal\Core\Menu\MenuLinkDefault->updateLink()
#5 /code/web/core/modules/menu_ui/src/MenuForm.php(525): Drupal\Core\Menu\MenuLinkManager->updateDefinition()
#6 /code/web/core/modules/menu_ui/src/MenuForm.php(202): Drupal\menu_ui\MenuForm->submitOverviewForm()
#7 /code/web/core/lib/Drupal/Core/Form/FormSubmitter.php(108): Drupal\menu_ui\MenuForm->submitForm()
#8 /code/web/core/lib/Drupal/Core/Form/FormSubmitter.php(45): Drupal\Core\Form\FormSubmitter->executeSubmitHandlers()
#9 /code/web/core/lib/Drupal/Core/Form/FormBuilder.php(615): Drupal\Core\Form\FormSubmitter->doSubmitForm()
#10 /code/web/core/lib/Drupal/Core/Form/FormBuilder.php(347): Drupal\Core\Form\FormBuilder->processForm()
#11 /code/web/core/lib/Drupal/Core/Controller/FormController.php(73): Drupal\Core\Form\FormBuilder->buildForm()
#12 [internal function]: Drupal\Core\Controller\FormController->getContentResult()
#13 /code/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(123): call_user_func_array()
#14 /code/web/core/lib/Drupal/Core/Render/Renderer.php(634): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->{closure:Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber::wrapControllerExecutionInRenderContext():121}()
#15 [internal function]: Drupal\Core\Render\Renderer::{closure:Drupal\Core\Render\Renderer::executeInRenderContext():634}()
#16 /code/web/core/lib/Drupal/Core/Render/Renderer.php(649): Fiber->resume()
#17 /code/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(121): Drupal\Core\Render\Renderer->executeInRenderContext()
#18 /code/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(97): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext()
#19 /code/vendor/symfony/http-kernel/HttpKernel.php(183): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->{closure:Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber::onController():96}()
#20 /code/vendor/symfony/http-kernel/HttpKernel.php(76): Symfony\Component\HttpKernel\HttpKernel->handleRaw()
#21 /code/web/core/lib/Drupal/Core/StackMiddleware/Session.php(53): Symfony\Component\HttpKernel\HttpKernel->handle()
#22 /code/web/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle()
#23 /code/web/core/lib/Drupal/Core/StackMiddleware/ContentLength.php(28): Drupal\Core\StackMiddleware\KernelPreHandle->handle()
#24 /code/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(118): Drupal\Core\StackMiddleware\ContentLength->handle()
#25 /code/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(92): Drupal\page_cache\StackMiddleware\PageCache->pass()
#26 /code/web/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(48): Drupal\page_cache\StackMiddleware\PageCache->handle()
#27 /code/web/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle()
#28 /code/web/core/lib/Drupal/Core/StackMiddleware/AjaxPageState.php(53): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle()
#29 /code/web/core/lib/Drupal/Core/StackMiddleware/StackedHttpKernel.php(54): Drupal\Core\StackMiddleware\AjaxPageState->handle()
#30 /code/web/core/lib/Drupal/Core/DrupalKernel.php(745): Drupal\Core\StackMiddleware\StackedHttpKernel->handle()
#31 /code/web/index.php(19): Drupal\Core\DrupalKernel->handle()
#32 {main}

To Reproduce

Use config staging site in test or live
Attempt to rearrange home menu item in main menu.
See error above in log.

Proposed resolution

Add core.menu.static_menu_link_overrides to config ignore whitelist

Expected behavior

Content admin or editor can rearrange menu items.