fix(teacher/formPage): 将时间选择器的默认值从固定日期改为当前日期

@@ -664,7 +664,13 @@ const openTimePicker = (chapter, type) => {
       date.getDate().toString().padStart(2, '0')
     ];
   } else {
-    currentChapterTime.value = ['2024', '01', '01'];
+    // 使用当前日期作为默认值
+    const today = new Date();
+    currentChapterTime.value = [
+      today.getFullYear().toString(),
+      (today.getMonth() + 1).toString().padStart(2, '0'),
+      today.getDate().toString().padStart(2, '0')
+    ];
   }
 
   showChapterTimePicker.value = true;