Improve the Android hardware back navigation experience #129
Description
What problem does this address?
The Android platform includes the ability to navigate backwards via a hardware button or swipe gesture. The user expectation is that performing this action dismisses modals within the editor. Currently it exits the editor entirely.
What is your proposed solution?
We'll need to track modal visibility in the native logic and/or communicate back navigation events to the WebView. There is likely pros and cons to either approach. I'm guessing the latter is the best approach; we'd need to relinquish backwards navigation back to the native host if now modal is visible.