fix(oa): update mobile print button toasts for PDF export

Co-authored-by: Cursor <cursoragent@cursor.com>

mobile-oa-h5/src/views/OaDetail.vue

@@ -381,15 +381,10 @@ async function onPrint() {
       '-'
     const result = await exportOaApprovalPdf(detail.value, { printerName })
     if (!result?.ok) {
-      showToast(
-        result?.message ||
-          '当前环境无法调起打印，请用手机浏览器打开或到电脑端导出'
-      )
+      showToast(result?.message || '导出 PDF 失败')
     }
   } catch (e) {
-    showToast(
-      e?.message || '当前环境无法调起打印，请用手机浏览器打开或到电脑端导出'
-    )
+    showToast(e?.message || '导出 PDF 失败')
   } finally {
     printing.value = false
   }