signin.aws.amazon.com says network failure on Firefox

signin.aws.amazon.com says network failure when programmatic access is selected.

The script is not working on Firefox as well.

I wonder why this is not supported by default on the AWS SAML landing page?

首先定位处理 AWS SAML 着陆页的 userscript 代码，并在选择程序化访问时于 Firefox 中复现网络失败。完成的标准是脚本能在 Firefox 中运行，并且所选的程序化访问流程不再报告网络失败。

由索引模型根据 Issue 内容生成。