enhance(frontend): Better Timeline(MkPagination) Experience (#11066)

* enhance(frontend): Better MkPagination Appearance

* fix

* fix

* 新規投稿が空でも先頭に戻ったらunshiftItemsする

* use Map

* refactor, 型エラー潰し

* refactor

packages/frontend/src/pages/custom-emojis-manager.vue

@@ -144,7 +144,7 @@ const edit = (emoji) => {
 					...result.updated,
 				}));
 			} else if (result.deleted) {
-				emojisPaginationComponent.value.removeItem((item) => item.id === emoji.id);
+				emojisPaginationComponent.value.removeItem(emoji.id);
 			}
 		},
 	}, 'closed');