fix(Student): 修复跟随模式下侧边栏未自动展开的问题

当类型为2且侧边栏处于折叠状态时，自动展开侧边栏以改善用户体验

src/views/Student/index.vue

@@ -2617,6 +2617,9 @@ const selectCourseSLook = async (type = 2) => {
       sendMessage({slideIndex: slideIndex.value, courseid: props.courseid, type: 'slideIndex'})
       console.log('设置当前幻灯片为跟随目标:', slideIndex.value)
     }
+    if (props.type == '2' && slidePanelCollapsed.value) {
+      slidePanelCollapsed.value = false
+    }
   }
   else {
     isFollowModeActive.value = false