fix: 网元激活码多行行内容提取

src/modules/network_element/service/ne_license.go

@@ -138,9 +138,9 @@ func (r *NeLicense) ReadLicenseInfo(neLicense model.NeLicense) (string, string)
 	}
 
 	activationRequestCode := string(bytes)
-	parts := strings.SplitAfter(string(bytes), "\n")
-	if len(parts) > 1 {
-		activationRequestCode = parts[1] // 获取 \n 后的内容
+	parts := strings.Split(activationRequestCode, "\n")
+	if len(parts) > 1 && strings.HasPrefix(parts[0], "SN") {
+		activationRequestCode = parts[1] // 获取第二行内容
 	}
 	return strings.TrimSpace(activationRequestCode), licensePath
 }