Add Ren'Py code block highlighting - #17879

Description / 描述

Adds Ren'Py script syntax highlighting to SiYuan code blocks by registering a renpy language, with rpy as an alias, in the bundled third-party Highlight.js language file.

Also bumps the third-languages.js query version from 2.0.1 to 2.0.2 so clients load the updated language bundle instead of a cached copy.

Ren'Py script files are Python-like, but they have their own script statements such as label, scene, show, menu, jump, screen, transform, define, dialogue lines, text interpolation, and text tags. Using python for Ren'Py code blocks produces inaccurate language metadata and incomplete highlighting.

The lightweight Highlight.js grammar is cross-checked against Ren'Py's official VS Code/TextMate grammar, which is MIT licensed: https://github.com/renpy/vscode-language-renpy

Type of change / 变更类型

• Bug fix
  缺陷修复
• Refactoring
  代码重构
• New feature
  新功能
• Text updates or new language additions
  修改文案或增加新语言

Validation

• Ran node --check app/stage/protyle/js/highlight.js/third-languages.js
• Loaded the bundled highlight.min.js and updated third-languages.js in a Node VM, then confirmed that renpy and rpy are registered and Ren'Py samples produce Highlight.js markup for keywords, strings, comments, titles, interpolation, text tags, and backtick strings.
• Ran git diff --check HEAD^ HEAD

Checklist / 检查清单

• I have performed a self-review of my own code
  我对自己的代码进行了自我审查
• I have full rights to the submitted code and agree to license it under this project's AGPL-3.0 license
  我拥有所提交代码的完整权利，并同意其以本项目的 AGPL-3.0 许可证授权
• PR is submitted to the dev branch and has no merge conflicts
  PR 提交到 dev 分支，并且没有合并冲突

Notes

This is a lightweight Highlight.js grammar intended for code block readability. It does not attempt to parse the full Ren'Py language.