fix(share): 修复分享页面无数据时未显示暂无数据

@@ -95,7 +95,7 @@ const getSharePageContentData = async () => {
     }
     setTitle(dataViewName || '')
     showModal.value = false
-    allowLoadPreviewPage.value = false
+    allowLoadPreviewPage.value = unref(isEmpty)
   } catch (error) {
     console.log(error)
   } finally {