fix(where): add crossOrigin anonymous to tile layer for Brave compatibility

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

where.njk

@@ -47,7 +47,8 @@ leafletMap: true
       var map = L.map('checkin-map');
       L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
         attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
-        maxZoom: 19
+        maxZoom: 19,
+        crossOrigin: 'anonymous'
       }).addTo(map);
       function escHtml(s) {
         return String(s).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');