fix: `BurgerMenu` wrong semantics and colors (#32345)

.changeset/tall-wombats-love.md

...teor/client/components/BurgerMenu/BurgerBadge.stories.tsx

...eteor/client/components/BurgerMenu/BurgerIcon.stories.tsx

apps/meteor/client/components/BurgerMenu/BurgerIcon.tsx

.../meteor/client/components/BurgerMenu/BurgerMenuButton.tsx

apps/meteor/client/components/BurgerMenu/Line.tsx

apps/meteor/client/components/BurgerMenu/Wrapper.tsx

apps/meteor/client/components/BurgerMenu/index.ts

apps/meteor/client/components/Page/PageHeader.tsx

...eteor/client/components/SidebarToggler/SidebarToggler.tsx

.../client/components/SidebarToggler/SidebarTogglerBadge.tsx

...omponents/SidebarToggler/SidebarTogglerButton.stories.tsx

...client/components/SidebarToggler/SidebarTogglerButton.tsx

apps/meteor/client/components/SidebarToggler/index.ts

apps/meteor/client/views/room/Header/Header.tsx

...t/views/room/Header/Omnichannel/OmnichannelRoomHeader.tsx

...r/client/views/room/Header/Omnichannel/VoipRoomHeader.tsx

apps/meteor/client/views/room/RoomNotFound.tsx

apps/meteor/tests/e2e/channel-management.spec.ts

packages/i18n/src/locales/af.i18n.json