Revert co clean class

...vigation/assets/icons/announcements-feed-announcement.svg

...odules/navigation/assets/icons/entity-user-collection.svg

core/modules/navigation/assets/icons/navigation-blocks.svg

core/modules/navigation/assets/icons/navigation-content.svg

core/modules/navigation/assets/icons/navigation-create.svg

core/modules/navigation/assets/icons/navigation-files.svg

...ation/assets/icons/navigation-user-links-user-wrapper.svg

core/modules/navigation/assets/icons/system-admin-config.svg

.../modules/navigation/assets/icons/system-admin-reports.svg

...odules/navigation/assets/icons/system-admin-structure.svg

core/modules/navigation/assets/icons/system-modules-list.svg

core/modules/navigation/assets/icons/system-themes-page.svg

...igation/components/toolbar-button/toolbar-button.pcss.css

core/modules/navigation/templates/navigation-menu.html.twig