Dropdown list disappears on mouseup when dragging scrollbar

## Expected Behavior
The user should be able to drag the scrollbar with the mouse without the dropdown list closing on mouseUp

## Current Behavior
When the user drags the scrollbar in the dropdown list, the dropdown list quickly closes on mouseup. This scenario only occurs when using both`virtualized` and `appendToBody` properties.

## Steps to Reproduce (for bugs)

1. Render a virtualized Select component
2. Include the `appendToBody` property
3. Click the Select component to open the dropdown list
4. Drag the scrollbar and release
## Context + Screenshots

## Your Environment

* Version used: 0.62.0
* Browser Name and version: Chrome version 92.0.4515.131
* Operating System and version (desktop or mobile): macOS Mojave 10.14.6