refactor(client): Use symbol

src/client/pages/announcements.vue

@@ -21,6 +21,7 @@ import { faCheck, faBroadcastTower } from '@fortawesome/free-solid-svg-icons';
 import MkPagination from '@client/components/ui/pagination.vue';
 import MkButton from '@client/components/ui/button.vue';
 import * as os from '@client/os';
+import * as symbols from '@client/symbols';
 
 export default defineComponent({
 	components: {
@@ -30,7 +31,7 @@ export default defineComponent({
 
 	data() {
 		return {
-			INFO: {
+			[symbols.PAGE_INFO]: {
 				title: this.$ts.announcements,
 				icon: faBroadcastTower
 			},