refactor: 【ID1001496】【前台】模拟考时，点击右上角关闭小程序后，倒计时需要锁定。

src/pages/learn/answer.vue

@@ -225,15 +225,15 @@ export default {
   },
   onShow() {
     // 从后台进入重新计算倒计时
-    if (this.source === 3 && this.beginTime) {
-      const timestamp = Utils.diffTime(this.beginTime, new Date())
-      this.timestamp = this.currentTime - timestamp
-      this.$u.vuex('beginTime', '')
-    }
+    // if (this.source === 3 && this.beginTime) {
+    //   const timestamp = Utils.diffTime(this.beginTime, new Date())
+    //   this.timestamp = this.currentTime - timestamp
+    //   this.$u.vuex('beginTime', '')
+    // }
   },
   onHide() {
     // 记录进入后台时间
-    if (this.source === 3) this.$u.vuex('beginTime', new Date())
+    // if (this.source === 3) this.$u.vuex('beginTime', new Date())
   },
   onLoad(e) {
     if (e?.experience) this.experience = JSON.parse(e.experience) // 体验资格