分类/标签管理中无法新建标签

[Higurashi-kagome]

Describe the bug

在分类/标签管理下，如果标签数量为 0，新建按钮似乎只能够新建分类：

Details

Reproduction

1. 进入管理后台分类/标签管理菜单 2. 在标签数量为 0 的情况下，尝试新建标签

System Info

  System:
    OS: Windows 11 10.0.26200
    CPU: (16) x64 12th Gen Intel(R) Core(TM) i5-12500H
    Memory: 3.92 GB / 23.73 GB
  Binaries:
    Node: 22.12.0 - D:\Program Files\nodejs\node.EXE
    Yarn: 1.22.22 - D:\Program Files\nodejs\yarn.CMD
    npm: 10.9.0 - D:\Program Files\nodejs\npm.CMD
    bun: 1.3.6 - C:\Users\xxxx\.bun\bin\bun.EXE
  Browsers:
    Chrome: 145.0.7632.160
    Edge: Chromium (143.0.3650.96)
    Firefox: 137.0.2 - C:\Program Files\Mozilla Firefox\firefox.exe
    Internet Explorer: 11.0.26100.7309

  面板版本: 6.4.0

  系统版本：11.0.0-alpha.0

Validations

• Follow our Code of Conduct
• Read the Contributing Guide.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A, please open a GitHub Discussion instead.
• The provided reproduction is a minimal reproducible of the bug.

[linear]

MXD-211