[web] Remove intial redux state from website responders

Summary:
ENG-4752
Depends on D9141

After adding the call to initial redux state we can finally remove it from website-responders. We need to add a new default web state that will make sure the app runs while we make the call to the keyserver for the initial state.

Test Plan: Load the web app when logged in and when logged out. Check that the app works and there are no errors in the console.

Reviewers: kamil, inka, atul

Reviewed By: kamil

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D9145