* restore and enhance the time est feature
background: we had a feature for showing a time estimate on pending txs
that was accidently removed during the redesign implementation. This PR
restores that feature and also enhances it:
1. Displays the time estimate on all views instead of just fullscreen
2. Uses Intl.RelativeTimeFormat to format the time
3. Adds a way to toggle the feature flag.
4. Uses a hook to calculate the time remaining instead of a component
* Update app/_locales/en/messages.json
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
* do not display on test nets
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
