修复设置路由前缀为"/"时权限管理表单无法读取路由信息问题

src/Http/Controllers/PermissionController.php

@@ -151,7 +151,7 @@ class PermissionController extends AdminController
         $container = collect();
 
         $routes = collect(app('router')->getRoutes())->map(function ($route) use ($prefix, $container) {
-            if (! Str::startsWith($uri = $route->uri(), $prefix) && $prefix) {
+            if (! Str::startsWith($uri = $route->uri(), $prefix) && $prefix && $prefix !== '/') {
                 return;
             }