Added changes from @nicolashenry out of #9248

[Cellebyte]

Description

This Pull Request should solve problems with window.opener not being available in some edge-cases when the oauth2-redirect.html is used with an external auth provider.

Motivation and Context

In the comments of #9248 there was a proper successor to solve the the original problem.
The functionality started breaking when browsers introduced rel=noopener for target=_blank links.

The reasons why it breaks in some setups is described in #8315.

closes #8030
closes #8315

How Has This Been Tested?

I did not test it yet but others did in #9248.

Checklist

My PR contains...

• No code changes (src/ is unmodified: changes to documentation, CI, metadata, etc.)
• Dependency changes (any modification to dependencies in package.json)
• Bug fixes (non-breaking change which fixes an issue)
• Improvements (misc. changes to existing features)
• Features (non-breaking change which adds functionality)

My changes...

• are breaking changes to a public API (config options, System API, major UI change, etc).
• are breaking changes to a private API (Redux, component props, utility functions, etc.).
• are breaking changes to a developer API (npm script behavior changes, new dev system dependencies, etc).
• are not breaking changes.

Documentation

• My changes do not require a change to the project documentation.
• My changes require a change to the project documentation.
• If yes to above: I have updated the documentation accordingly.

Automated tests

• My changes can not or do not need to be tested.
• My changes can and should be tested by unit and/or integration tests.
• If yes to above: I have added tests to cover my changes.
• If yes to above: I have taken care to cover edge cases in my tests.
• All new and existing tests passed.

[nicolashenry]

Sorry I wanted to finalize it but there are some breaking tests due to my change and I did not had time to fix those. I was due to the introduction of BroadcastChannel global not existing in a NodeJs environment used in the tests if I remember correctly.