refactor(admin): remove unused 'where' option in system module

- Remove unnecessary 'where' option from various models in system module
- Simplify query methods by removing redundant 'where' calls
- Affected models: Config, Node, SystemAdmin, SystemMenu, SystemNode

app/admin/model/SystemNode.php

@@ -9,7 +9,7 @@ class SystemNode extends TimeModel
 
     public function getNodeTreeList(): array
     {
-        $list = $this->removeOption('where')->select()->toArray();
+        $list = $this->removeOption()->select()->toArray();
         return $this->buildNodeTree($list);
     }