Combining best of system Firefox and home-manager Firefox settings

I haven’t seen this documented yet, and wanted to point out that it’s possible to use BOTH the system-level Firefox and the home-manager-level Firefox settings. Why would you want to do this? Well, each has its advantages: System-level Firefox allows you to create system-wide “policies” that include “locked” preferences which cannot be sneakily modified by Firefox (e.g. I’ve noticed *sponsored settings change based on internal API calls, I guess) allows you to create force_installed Firefox ...