v107 enables region tracking (0203) again, why?

browser.region.network.url is the broader setting which needs to be blocked to prevent mozilla and firefox from knowing your region (region.current, region.home, browser.search.region, doh-rollout.home-region).
browser.region.update.enabled is a specific setting which only controls if firefox is allowed to switch region.home.

So browser.region.network.url is probably the main thing we want and not a just an additional defense-in-depth.

As firefox is now allowed to set browser.search.region we probably need to make 0204 active, too.

Originally posted by @livingentity in #1579 (comment)
Originally posted by @Thorin-Oakenpants in #1579 (comment)