useRangeCalendar committing changes when using elements other than buttons to navigate the calendar

# 🐛 Bug Report

Or Feature Request? Or general help request?

I'm building a calendar using `useRangeCalendar` and have also built in the ability to navigate to different months / years using two select dropdowns in the calendar header. The intention is that I can select a date, click the dropdown, and navigate to another month and have my selection continue in the other month (like the prev/next buttons). However, this bit of code prevents that by committing the current selected range and calling the calendar's `onChange` handler since my `select` menu doesn't fit the criteria of being a `button` element.

https://github.com/adobe/react-spectrum/blob/e1a53910584282ee6bf0594586ea17af546ed568/packages/%40react-aria/calendar/src/useRangeCalendar.ts#L54-L61

## 🤔 Expected Behavior

I would expect my `select` dropdown to behave in the same way as the button navigation and let me nav through different months and continue my selection until I click to end it or click outside of the calendar.

## 😯 Current Behavior

The calendar treats clicking on the `select` as a blur, commits the value, and calls the on change handler (which fires off a lot of unintended side effects for me).

## 💻 Code Sample

https://codesandbox.io/s/hardcore-feistel-hx1g71?file=/src/RangeCalendar.js


Start with packages/@react-aria/calendar/src/useRangeCalendar.ts at lines 54-61 and reproduce the behavior in the linked CodeSandbox. Compare navigation through the select dropdown with navigation through the calendar buttons; done means the range remains uncommitted while navigating and the onChange handler is not called prematurely.

Written by the indexing model from the issue text.