Persist SSO Auth

[jbouder]

Currently when configured for SSO, the app does not persist keycloak auth when the page is refreshed, across tabs, or when navigating to a URL directly. This is because a react-oidc-context provider configuration is missing. In addition, there are a few other updates required to ensure auth isn't loading during checks. This PR includes updates for that config as well as the updates to the UI to handle loading.

Description

• Updated keycloak config with userStore param to support persisted auth
• Updated components to check if auth is loading before returning auth state
• Updated redirect uri to dashboard

Related Issue

• Related to the following discussion: Preserving authentication in new tabs comet#183

Motivation and Context

• Provides a better user experience, allowing opening new tabs and opening directly URL

How Has This Been Tested?

• Tested with local keycloak

Screenshots (if appropriate):

N/A