Issue #3443709 by quietone: Enable Drupal.NamingConventions.ValidVariableName.LowerCamelName

core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php

core/lib/Drupal/Core/Config/Entity/ConfigEntityType.php

...Core/DependencyInjection/DependencySerializationTrait.php

core/lib/Drupal/Core/Entity/Annotation/ConfigEntityType.php

core/lib/Drupal/Core/Entity/Annotation/ContentEntityType.php

core/lib/Drupal/Core/Entity/ContentEntityType.php

core/lib/Drupal/Core/Entity/EntityType.php

...Plugin/Validation/Constraint/EntityHasFieldConstraint.php

core/lib/Drupal/Core/Field/Annotation/FieldType.php

...Core/Field/Plugin/Field/FieldWidget/OptionsWidgetBase.php

core/lib/Drupal/Core/Form/FormState.php

core/lib/Drupal/Core/Layout/LayoutDefinition.php

core/lib/Drupal/Core/Password/PhpassHashedPasswordBase.php

...Core/Plugin/Definition/DependentPluginDefinitionTrait.php

core/lib/Drupal/Core/Session/UserSession.php

core/lib/Drupal/Core/Template/TwigSandboxPolicy.php

...ment/src/Plugin/views/field/StatisticsLastCommentName.php

.../comment/src/Plugin/views/field/StatisticsLastUpdated.php

...comment/src/Plugin/views/filter/StatisticsLastUpdated.php

core/modules/comment/src/Plugin/views/row/Rss.php