Fixed: timeZone does not gets updated for user login, removed confirm alert, and added loading state

[amansinghbais]

Related Issues

When changing the timeZone, the timeZone gets updated in the app untill logout, but after logout and login the user timeZone is again set to the previous state.

Short Description and Why It's Useful

• Updated api payload to pass the correct param for timeZoneId so to set the timeZone for the user
• Removed confirm alert before updating the timeZone
• Added css for empty state
• Enabled timeZone updation on enter
• Handled case to show loading state untill we does not get the timeZones list

Screenshots of Visual Changes before/after (If There Are Any)

IMPORTANT NOTICE - Remember to update CHANGELOG.md with description of your change

Contribution and Currently Important Rules Acceptance

• I read and followed contribution rules