kevinhongzl opened a new pull request, #52257:
URL: https://github.com/apache/airflow/pull/52257

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   closes: #50373
   related: #51836
   
   ### What
   Auth manager pages are embedded in the webUI using iframes. However, the 
current sandbox lacks the `allow-script` permission, which breaks the 
functionality of auth manager because it is built with FAB.
   
   ### How
   * enable `allow-scripts` in iframe
   * implement source restriction with CSP, allowing only contents from the 
backend server.
   * bypass missing-sandbox check*
   
   *note: adding `allow-script` and removing `allow-same-origin` at the same 
time would prevent the fab auth manager from accessing its resources, thus also 
breaking its functionality. Given that we are only embedding trusted sources, I 
think it is acceptable to relax the sandbox restriction here.
   
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