fix: crash when restoring minimized hidden window (#21813)

shell/browser/native_window_views.h

@@ -275,6 +275,9 @@ class NativeWindowViews : public NativeWindow,
 
   // Set to true if the window is always on top and behind the task bar.
   bool behind_task_bar_ = false;
+
+  // Whether to block Chromium from handling window messages.
+  bool block_chromium_message_handler_ = false;
 #endif
 
   // Handles unhandled keyboard messages coming back from the renderer process.