Fix logged in error on refreshing in react app

[carpecodeum]

Description

Fix changes in the userReducer and applying sessionStorage on authentication and moving the removing sessionStorage in the reducer itself

#878

Motivation and Context

the user was getting logged out on refreshing the app

How Has This Been Tested?

tested by refreshing on being logged in.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.