[Remote Config] UI will not update on completion if user is idle while Pushing

When the user presses Push to sync their changes, the UI will be disabled in place of a "Loading, please wait" message. If the user is idle after pressing Push, the UI will be stuck in this described state until the user uses an input (for example moving the mouse). This may be confusing to the user if they are waiting on the process to complete.

Steps to .reproduce:
- Create and open a new project in Unity 2019.3 (+) or download the attached project
- If in a new project, install the Remote Config package via Package Manager (it may be a preview package)
- Window > Remote Config Management
- Press "Push" and cease all mouse/keyboard/etc input
- Wait some time
- Move the mouse, observing the UI will then update reflecting the Push has completed