[Hold for payment 2024-09-06] [#wave-control] [Bring copilot to NewDot] Display account switcher

[dangrous]

Part of the Bring copilot to NewDot project

Main issue: https://github.com/Expensify/Expensify/issues/382866
Doc section: https://docs.google.com/document/d/18G6J5bl61VnVa5CoKpRXhM0MhkXDwpm87GVitZrSCVg/edit#heading=h.4gw8y2nhd2we
Project: #expensify-bugs

Feature Description

Manual Test Steps

Automated Tests

[dangrous]

assigning myself for review once it's ready