LibWeb: Add getter for history-action activation

Author: https://github.com/jamierocks
Commit: 34b2a4f7ca
Pull-request: https://github.com/SerenityOS/serenity/pull/24437
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/mattco98
Reviewed-by: https://github.com/tcl3

Userland/Libraries/LibWeb/HTML/Window.h

@@ -122,6 +122,9 @@ public:
     // https://html.spec.whatwg.org/multipage/interaction.html#transient-activation
     bool has_transient_activation() const;
 
+    // https://html.spec.whatwg.org/multipage/interaction.html#history-action-activation
+    bool has_history_action_activation() const;
+
     WebIDL::ExceptionOr<void> initialize_web_interfaces(Badge<WindowEnvironmentSettingsObject>);
 
     Vector<JS::NonnullGCPtr<Plugin>> pdf_viewer_plugin_objects();