Missing "3D URP" template when going from 2021.2.3f1 to 2021.2.4f1 and newer
Note there are also couple settings that that template fixed that are not correct in the URP template --- know that with the URP template (not the 3D URP) is causing issues for many devs (including myself until I figured it out today) are getting the "infinite loading dots" unless you unclick the "Auto Graphics API" -AND- then delete the "Vulcan". Moral of the story, please bring back the clean "3D URP" template that just worked -- thanks!
The "3D URP" template made project setup very easy --- see...
http://www.lancelarsen.com/xr-step-by-step-setting-up-your-oculus-quest-xr-project-in-unity-2021/
