[6.x] Fix configure navs permission not working properly (#14775)

Author: joshuablum

src/Policies/NavTreePolicy.php

@@ -10,7 +10,9 @@ class NavTreePolicy extends NavPolicy
 
     public function before($user)
     {
-        if (User::fromUser($user)->isSuper()) {
+        $user = User::fromUser($user);
+
+        if ($user->isSuper() || $user->hasPermission('configure navs')) {
             return true;
         }
     }

tests/Policies/NavTreePolicyTest.php

@@ -37,6 +37,17 @@ public function trees_are_viewable_with_view_and_site_permissions()
         $this->assertTrue($user->can('view', $nav->makeTree('de')));
     }
 
+    #[Test]
+    public function trees_are_viewable_and_editable_with_configure_permission()
+    {
+        $user = $this->userWithPermissions(['configure navs']);
+
+        $nav = Nav::make('test');
+
+        $this->assertTrue($user->can('view', $nav->makeTree('en')));
+        $this->assertTrue($user->can('edit', $nav->makeTree('en')));
+    }
+
     #[Test]
     public function navs_are_editable_with_edit_permissions()
     {