Generic OIDC group scope is not sent in the request formed by the UI

[cnotv]

Summary

Fixes #12477

Occurred changes and/or fixed issues

Included scopes in the Keycloack pop-up as indicated in the issue.

Technical notes summary

It seems like scope was not added to the whole logic after passing the list from the UI.

In the store logic it's also mispelled to plural as scopes.
The function where it gets added has not been changed since 5 years and is not working.

dashboard/store/auth.js

Lines 141 to 143 in f76baeb

	if ( opt.scopes ) {
	addObjects(scopes, opt.scopes);
	}

• Replaced addObjects() with new joinStringList()
• Added tests to the redirectTo action to generate redirect URL to auth provider pop up with all the involved cases
• Added tests to the test action to pass all the required options to compose the redirect URL
• Added tests to the auth-config mixin used in the view to submit the auth configuration
• Added tests to the utility function concatStrings()

Areas or cases that should be tested

As by reported issue.

Areas which could experience regressions

• Auth with other non-SAML providers (Azure has E2E)

Screenshot/Video

Checklist

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