fix: use safeJS for jsonify output (was string-escaped, not object)

Hugo was wrapping jsonify output in quotes, making it a string
instead of a JS object. countries.forEach then fails.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

layouts/shortcodes/world-map.html

@@ -47,7 +47,7 @@ function ifkInitMap() {
     fr: { enforced: 'En vigueur', passed: 'Adopté', progress: 'En cours', guidelines: 'Directives' }
   };
 
-  var countries = {{ $countries | jsonify }};
+  var countries = {{ $countries | jsonify | safeJS }};
   var byIsoNum = {};
   countries.forEach(function(c) { byIsoNum[c.isoNum] = c; });