Greasy Fork

- Extended the time the script runs to 240 seconds to account for long ads.
- Fixed an issue where the script would only function if the on-stream overlay banner/sponsor icon was being used by the stream.

- Extended amount of time the script checks for the banners for from 30 to 70 seconds, to make sure the script can delete the banners once an ad has finished running.
- Made the script ensure the stream tab has focus before checking if the banners are on screen, to ensure it doesn't break if the user switches tabs.