LibWeb+LibWebView+WebContent: Reset pinch-to-zoom state on Ctrl/Cmd+0

Author: https://github.com/kalenikaliaksandr
Commit: 835081d66e
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6430
Reviewed-by: https://github.com/gmta
Reviewed-by: https://github.com/konradekk

Libraries/LibWeb/HTML/Navigable.cpp

@@ -2769,4 +2769,12 @@ void Navigable::scroll_viewport_by_delta(CSSPixelPoint delta)
     doc->set_needs_display(InvalidateDisplayList::No);
 }
 
+void Navigable::reset_zoom()
+{
+    auto document = active_document();
+    if (!document)
+        return;
+    document->visual_viewport()->reset();
+}
+
 }