Bug: 无法拖动插件和分组

拖拽插件或分组放下后不会生效

报错：

Uncaught TypeError: event.dataTransfer is null
    treeNodeDragEnd useDragNode.ts:109
    handleDragEnd tree-node.vue:321
    _sfc_render29/_cache[5]< tree-node.vue:25
    cacheKey runtime-dom.esm-bundler.js:1462
    callWithErrorHandling runtime-core.esm-bundler.js:202
    callWithAsyncErrorHandling runtime-core.esm-bundler.js:209
    invoker runtime-dom.esm-bundler.js:691
useDragNode.ts:109:4

环境信息：

System:
    OS: Linux 6.6 NixOS 24.11 (Vicuna) 24.11 (Vicuna)
    CPU: (6) x64 AMD Ryzen 5 4500U with Radeon Graphics

Binaries:
    Node: 20.15.1
    Yarn: 4.4.0

Koishi:
    Core: 4.17.11
    Console: 5.29.3

koishijs / webui

Bug: 无法拖动插件和分组 #334