Remove multiple duplicate refresh token calls on startup

[karthikjeeyar]

Issue Overview

Post login, there are multiple timers registered in the app to call refresh token API.

Expected Behaviour

Application should not have multiple refresh token API calls at the same time.

Current Behaviour

App has multiple instances of authentication service, resulting in different refresh token timers are set up in different time interval.

Steps To Reproduce

1. After logging in, check the network capture tab.

[karthikjeeyar]

I have brought down the refresh timer to one second, to illustrate the two api calls are made simultaneously
in every one second.