Change Details

Should fix [ENG-3840](https://linear.app/comm/issue/ENG-3840) (landing not working). The issue was a circular dependecy after adding validators. There were a few ways to decouple the cycle `account-utils.js -> account-types.js -> validation-utils.js` but I think that's the simplest one.

Should fix ENG-3840 (landing not working). The issue was a circular dependecy after adding validators. Moves session related functions out of account-utils and into session-utils

Should fix [ENG-3840](https://linear.app/comm/issue/ENG-3840) (landing not working). The issue was a circular dependecy after adding validators. There were a few ways to decouple the cycle `account-utils.js -> account-types.js -> validation-utils.js` but I think that's the simplest one.Moves session related functions out of account-utils and into session-utils