Add marketplace selected-plan PTC proxy variables#7802

daphnehanse11 wants to merge 2 commits intoPolicyEngine:mainPolicyEngine/policyengine-us:mainfrom

daphnehanse11:codex/7801-marketplace-selected-plan-ptc-proxydaphnehanse11/policyengine-us:codex/7801-marketplace-selected-plan-ptc-proxyCopy head branch name to clipboard