Dev channel update to 94.0.992.1 is live

Paul_VC As with most things related to how webpages are rendered, this appears to be behavior we inherit from Chromium (thus why that flag doesn't have Edge in it's name), and it doesn't appear that there's a way to do this in Chrome either, at least as far as I can tell, so this is likely something we'll have to work on ourselves if people request it.  It shouldn't be too hard though since it just needs a switch!