[Bug] Mindmap outline panel UI elements remain in Chinese regardless of system language

[Gabriele-Matrix]

Describe the bug

In VNote version 4.5.0-win64, the newly introduced Mindmap panel contains UI labels that are hardcoded or stuck in Chinese ("脑图大纲" and "搜索节点..."). Changing the global application language to English does not affect these labels. Even completely removing the _zh_CN.qm translation files from the translations directory leaves these specific strings untranslated, suggesting they might be hardcoded in the mindmap web component or plugin interface.

Steps to reproduce

1. Set VNote language to English.
2. Open or create a Mindmap note.
3. Observe the outline panel on the left side of the mindmap view.
4. The panel header and the search placeholder are still displayed in Chinese.

Expected behavior

The Mindmap interface labels should respect the global language selection (e.g., "Mindmap Outline" and "Search nodes..." when the language is set to English).

Environment

• VNote Version: 4.5.0-win64
• OS: Windows 10 / Windows 11 (64-bit)