I got a popup about UIPath not able to connect to the Firefox extension, so my first instinct was to look on the Mozilla add-ons page, and there was no extension. Eventually I found several help pages and figured out how to install it, but it was not intuitive.
Just put it on the add-ons page and then save maintenance on 3 doc pages and at least 1 forum post.
As a side effect, it will probably allow modified or niche browsers to be controlled by UIPath much more easier. Vivaldi, Brave, Waterfox, Pale Moon, Tor, etc.