feat: Adding support for CustomTabs and fix ASWebAuthenticationSession in WebAuthenticationBroker

[nickrandolph]

GitHub Issue (If applicable): closes #9338

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature

What is the current behavior?

Android: Doesn't use customtabs which is now the recommended model for doing web based authentication in an app iOS: ASWebAuthenticationSession throws exception in contructor when a full url is used as callbackuri (ie scheme://path instead of just scheme )

What is the new behavior?

Android: Now uses fall back from CustomTabs (if available) to external browser iOS: ASWebAuthenticationSession uses callbackuri.scheme instead of the whole callbackuri

PR Checklist

Please check if your PR fulfills the following requirements:

• [ ] Docs have been added/updated which fit documentation template (for bug fixes / features)
• [ X ] Unit Tests and/or UI Tests for the changes have been added (for bug fixes / features) (if applicable)
• [ ] Validated PR Screenshots Compare Test Run results.
• [ X ] Contains NO breaking changes
• [ ] Associated with an issue (GitHub or internal) and uses the automatic close keywords.
• [ X ] Commits must be following the Conventional Commits specification.

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