Notifications about network issues should only be displayed once

[brandones]

At present, there is a failure, a notification will be displayed every time document checking happens. If auto-checking is on, it will appear over and over, disappearing and reappearing every few seconds.

This PR makes it so that repeat notifications are suppressed when auto-checking.

Sorry the video is so long, but it shows both the present behavior and new behavior.

output.mp4

[Clemens-E]

I will add typings to the status and then merge it, thanks for the PR!
and sorry for not merging this sooner

[MartinJDavis93]

@brandones Thank you, this is a great PR, but there's a slightly inconvenient aspect while working – the notification doesn't close automatically. To close it, you've to click on it, which isn't very convenient. It'd be great if you could fix this. Thanks again.

[Clemens-E]

I modified this so the notification hides after 3 Seconds.
You can update the plugin to see the change

[MartinJDavis93]

I modified this so the notification hides after 3 Seconds. You can update the plugin to see the change

Updated, everything works great! Thank you kindly.