Checkout with logged user from /login page not detected on checkout flow

[Mesrar]

Summary

When a user logged from /login on the checkout flow user should be authenticated.

Steps to reproduce

1. Use /login page to logged in
2. Add a product to cart
3. Go to cart page and checkout
4. User is not detected as connected user.

A link to a reproduction repository

No response

Output from envinfo

No response

[kushalbajje]

@Mesrar you may have to move the authentication in login page to server side.
current scenario is when a user signs in from /login the auth tokens are not accessible at server side in /checkout flow. you need to sync these two to make the server aware of the user session.