content.js

setTimeout(() => {
  window.close();
}, 5000)

manifest.json

{
  "manifest_version": 2,
  "name": "Auto Closer",
  "description": "This extension automatically closes matching windows after a short delay.",
  "version": "0.1",
  "content_scripts": [
    {
      "matches": [
        "https://localhost:8250/oidc/*",
        "http://localhost:8250/oidc/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}

put files in a directory, go to chrome://extensions turn on Developer mode, and Load Unpacked from the directory

setTimeout(() => {
    if (window.location.hostname.endsWith("zoom.us")) {
        if (window.location.hash.endsWith("success")) {
            window.close();
        }
    } else {
        window.close();
    }
}, 5000);