feat: 人工确认页面没有数据时上一份按钮控制调整

src/features/admin/confirmPaper/ConfirmPaper.vue

@@ -109,7 +109,7 @@
           <div>
             <a-button
               shape="round"
-              :disabled="currentIndex === 1"
+              :disabled="currentIndex <= 1"
               class="tw-mr-4"
               @click="getPreviousStudent"
             >