make stale reference-proof

[silesky]

test/repro here: https://github.com/silesky/segment-stale-reference/tree/main

The "minified" updated function is:

 analytics.factory = function (e) {
      return function () {
        if (window.analytics.initialized) {
          return window.analytics[e].apply(window.analytics, arguments);
        }
        var t = Array.prototype.slice.call(arguments);
        t.unshift(e);
        analytics.push(t);
        return analytics
      }
};

[pooyaj]

🚀