fix(econ): render latex labels on mathjax ready

scripts/posts/models-of-production.js

@@ -664,7 +664,23 @@ document.addEventListener("DOMContentLoaded", function () {
 });
 
 document.addEventListener("DOMContentLoaded", function () {
-  MathJax.typeset()
+  // wait for mathjax
+  if (typeof MathJax !== "undefined") {
+    MathJax.typeset();
+    initSliderEvents();
+  } else {
+    window.MathJax = {
+      startup: {
+        pageReady: function () {
+          return MathJax.startup.defaultPageReady().then(function () {
+            initSliderEvents();
+          });
+        },
+      },
+    };
+  }
+
+  function initSliderEvents() {
     document.querySelectorAll(".sliders").forEach((slidersDiv) => {
       slidersDiv.addEventListener("input", function (event) {
         const graphDiv = slidersDiv.previousElementSibling;
@@ -676,5 +692,5 @@ document.addEventListener("DOMContentLoaded", function () {
         }
       });
     });
+  }
 });
-