Issue #2921178: Tokens not replaced when a link resolves to a route.

Closes #2921178

src/Service/MenuLinkTreeMenuToken.php

@@ -220,10 +220,15 @@ class MenuLinkTreeMenuToken extends MenuLinkTree {
         continue;
       }
       $definition = $linkTreeElement->link->getPluginDefinition();
-      if ($definition['url'] === $contextual_replacement_links[$pluginId]['url']) {
+      if ($definition['url'] === $contextual_replacement_links[$pluginId]['url'] && $definition['route_parameters'] === $contextual_replacement_links[$pluginId]['route_parameters']) {
         continue;
       }
       $definition['url'] = $contextual_replacement_links[$pluginId]['url'];
+      foreach (array_keys($definition['route_parameters']) as $type) {
+        if (array_key_exists($type, $contextual_replacement_links[$pluginId]['route_parameters'])) {
+          $definition['route_parameters'][$type] = $contextual_replacement_links[$pluginId]['route_parameters'][$type];
+        }
+      }
       $linkTreeElement->link->updateLink($definition, FALSE);
     }