ESR115: ensure no remote calls for weather & addon suggestions

FF108+ 1799363 - FYI uses regionalPrefsLocales bugzilla 1809201 - even if we patched that to use AppLocale, it doesn't make sense in the Tor world

user_pref("browser.urlbar.suggest.weather", false);
user_pref("browser.urlbar.weather.featureGate", false);

user_pref("browser.urlbar.suggest.addons", false);
user_pref("browser.urlbar.addons.featureGate", false);

FF115 ships with both these featureGates as false - but we should make sure there are no remote calls

Edited Jul 23, 2023 by Thorin

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