* remove nested info from HubSpot request
* introduce feature flags to constants file
* set experiment variant on mount
* routing and flag logic for email flow
* old flow (skipDeploymentOptions)
* try routing everything through signup page
* add a call to reload feature flags; show that it still does not work
* logic to set, persist, and update active experiment variants
* changes and hydration from feature flags
* selector for activeVariant, minor cleanup
* bugfix
* capture with set_once
* send variant name as an event prop, use a more description user prop name
* render nothing on the intermediate page if a redirect should occur
Co-authored-by: kunal <kunal@kunals-MacBook-Pro.local>
