Controllable open state for combobox

# 🙋 Feature Request

Currently the comobobox state implements the popover trigger interface, but does not accept props to control the open state of that state

## 🤔 Expected Behavior

passing defaultOpen or isOpen props to `useComboBoxState` should control open state of the combobox

## 😯 Current Behavior

defaultOpen and isOpen can not be passed

## 💁 Possible Solution

## 🔦 Context

## 💻 Examples

## 🧢 Your Company/Team

## 🎁 Tracking Ticket (optional)