Potential fix for code scanning alert no. 1: Double escaping or unescaping

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: B1ueber2y

_static/underscore-1.3.1.js

@@ -900,7 +900,7 @@
   // Within an interpolation, evaluation, or escaping, remove HTML escaping
   // that had been previously added.
   var unescape = function(code) {
-    return code.replace(/\\\\/g, '\\').replace(/\\'/g, "'");
+    return code.replace(/\\'/g, "'").replace(/\\\\/g, '\\');
   };
 
   // JavaScript micro-templating, similar to John Resig's implementation.