Add the same color syntax highlighting to zref/zlabel provided by zref as ref/label

[Yarakashi-Kikohshi]

The commands \zref[option]{foo} and \zlabel{foo} provided by zref receive different syntax highlighting than \ref and \label.

\label{foo}
\zlabel{foo}

\zref{foo}
\zref[option]{foo}

\zref with option and \zlabel are variations of \ref and \label, and are commands with the same meaning. Therefore, they should have the same color syntax highlighting.

Version

• LaTeX Workshop: 9.20.1
• VS Code

  Version: 1.89.0 (user setup)
  Commit: b58957e67ee1e712cebf466b995adf4c5307b2bd
  Date: 2024-05-01T02:09:22.859Z
  Electron: 28.2.8
  ElectronBuildId: 27744544
  Chromium: 120.0.6099.291
  Node.js: 18.18.2
  V8: 12.0.267.19-electron.0
  OS: Windows_NT x64 10.0.22631