JS clicks and MouseInput clicks trigger page navigation

src/notification.zig

@@ -1,10 +1,17 @@
 const URL = @import("url.zig").URL;
+const browser = @import("browser/browser.zig");
 
 pub const Notification = union(enum) {
-    page_navigate: PageEvent,
-    page_navigated: PageEvent,
+    page_navigate: PageNavigate,
+    page_navigated: PageNavigated,
 
-    pub const PageEvent = struct {
+    pub const PageNavigate = struct {
+        timestamp: u32,
+        url: *const URL,
+        reason: browser.NavigateReason,
+    };
+
+    pub const PageNavigated = struct {
         timestamp: u32,
         url: *const URL,
     };