Fix page callbacks for RawWebViewWidget.

Author: BirjuVachhani

lib/src/transformers/node_transformers/passive_web_view_transformer.dart

@@ -207,12 +207,11 @@ class _RawWebViewWidgetState extends State<RawWebViewWidget> {
 
       _controller.setBackgroundColor(
           props.backgroundColor?.toFlutterColor() ?? Colors.transparent);
-
-      _controller.setNavigationDelegate(NavigationDelegate(
-        onPageFinished: (url) => widget.onPageLoaded?.call(_controller, url),
-        onPageStarted: (url) => widget.onPageStarted?.call(_controller, url),
-      ));
     }
+    _controller.setNavigationDelegate(NavigationDelegate(
+      onPageFinished: (url) => widget.onPageLoaded?.call(_controller, url),
+      onPageStarted: (url) => widget.onPageStarted?.call(_controller, url),
+    ));
   }
 
   Future<void> _loadData() {