[改进]修复sidebar_root_menu: false的相关问题

[MagicFollower]

【解决的问题】
主题原版 root-menu-roots.html 在收集「自根页面」时未检查 sidebar_root_menu 字段，
导致即使设置了 sidebar_root_menu: false 也无法从侧边栏的下拉卡片列表中隐藏该条目。
本覆盖文件在第二个循环中补充了 (ne .Params.sidebar_root_menu false) 判断，
使 sidebar_root_menu: false 对两类来源均生效。
↓
本次修复会使得下面配置中的sidebar_root_menu: false 生效

---
title: 博客
description: 技术文章、学习笔记与心得体会。
type: blog
icon: fa-solid fa-blog
sidebar_root_for: self
sidebar_root_link_self: true
sidebar_root_menu: false   // ← LOOK ME
menus:
  main:
    identifier: blog
    weight: 10
cascade:
  type: blog
  footer_style: slim
  reading_time: true
---

在这里记录技术思考、学习心得与实践经验。

[Vonng]

Thanks for the focused fix, @MagicFollower! Your PR has been merged and is included in v1.1.0.

Explicit sidebar_root_menu: false now works for nested self-roots as well as top-level sections. We've added regression coverage and documented the behavior, including the current root remaining as a location marker while browsing that section.

Thank you for contributing to OINK!