Now that we have Geoip2 activated by default for all new users (done in #12699), we should also activate the feature for all existing users who are upgrading. Since Geoip2 requires a DB update for the Region column, we need to wait for Matomo 4 to enable the plugin.

Suggested steps for final Geoip2 takeover

• Activate the plugin on update to Matomo 4.0.0
• Could we automatically download the database?
• When Geoip1 was enabled, and Geoip2 database successfully downloaded, could we automatically enable Geoip2 provider instead?
• We should also move all the Geoip1 code to a separate plugin. Later (maybe in Matomo 5?) we should then remove/delete this plugin completely.
• Check that all FAQs/ user guides exclusively mention Geoip2 (delete all Geoip1 specifics)
• ...?