dropme! Bug 40458: Implement .tor.onion aliases

Bug 42354: Upstreamed the ShouldSanitizePreference refactor

Drop this commit on the rebase.

modules/libpref/Preferences.cpp

@@ -6171,10 +6171,7 @@ static bool ShouldSanitizePreference(const Pref* const aPref) {
       const auto* p = prefName;  // This avoids clang-format doing ugly things.
       return !(strncmp("services.settings.clock_skew_seconds", p, 36) == 0 ||
                strncmp("services.settings.last_update_seconds", p, 37) == 0 ||
-               strncmp("services.settings.server", p, 24) == 0 ||
-               // Prevent a crash in debug builds. Please refer to
-               // StaticPrefList.yaml, tor-browser#41165 and tor-browser!765 for details.
-               strncmp("browser.urlbar.onionRewrites.enabled", p, 36) == 0);
+               strncmp("services.settings.server", p, 24) == 0);
     }
   }