fix: Fix timing issue in Media Flow dashboard data display

- Move updateFlowStats/updateServiceStats calls after DOM is ready
- Use requestAnimationFrame to ensure elements exist before updating
- Fixes "0 flows" display bug when data was actually available

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package/secubox/luci-app-media-flow/htdocs/luci-static/resources/view/media-flow/dashboard.js

@@ -270,7 +270,6 @@ return L.view.extend({
 			});
 		};
 
-		updateFlowStats();
 		v.appendChild(flowSection);
 
 		// Stats by service (from history)
@@ -423,16 +422,22 @@ return L.view.extend({
 			});
 		};
 
-		updateServiceStats();
 		v.appendChild(statsSection);
 
+		wrapper.appendChild(v);
+
+		// Call update functions after DOM is ready
+		requestAnimationFrame(function() {
+			updateFlowStats();
+			updateServiceStats();
+		});
+
 		// Setup auto-refresh
 		poll.add(L.bind(function() {
 			updateFlowStats();
 			updateServiceStats();
 		}, this), 5);
 
-		wrapper.appendChild(v);
 		return wrapper;
 	},