Mermaid: doesn´t support comment

[ITCTOM]

Describe the bug

if using mermaid description language a comment in mermaid language is not supportet. No diagram is drawn.

Please complete the following:

Which version of .NET Interactive are you using? (In a notebook, run the #!about magic command. ):
Version: 1.0.522904+cdfa48b2ea1a27dfe0f545c42a34fd3ec7119074
Library version: 1.0.0-beta.24229.4+cdfa48b2ea1a27dfe0f545c42a34fd3ec7119074
Build date: 2024-09-11T07:40:37.8147123Z

• OS
  • Windows 11
  • Windows 10
  • macOS
  • Linux (Please specify distro)
  • iOS
  • Android
• Browser
  • Chrome
  • Edge
  • Firefox
  • Safari
• Frontend
  • Jupyter Notebook
  • Jupyter Lab
  • nteract
  • Visual Studio Code
  • Visual Studio Code Insiders
  • Visual Studio
  • Other (please specify)

Screenshots

If applicable, add screenshots to help explain your problem.

[ITCTOM]

sorry i forget to mention: only if the comment is in first line of the mermaid polyglot cell.

[jonsequitur]

Are you using the Mermaid comment syntax (using the %% prefix)?

In Polyglot Notebooks, the entire cell is treated as a single language, with the exception of magic commands, or unless split up using magic commands.

So either of the following works:

%% This is a comment

pie title Should you use a pie chart?
    "Yes" : 3
    "No, but we'll do it anyway" : 97

// This is a comment if the cell language is C#, JavaScript, etc.

#!mermaid

pie title Should you use a pie chart?
    "Yes" : 3
    "No, but we'll do it anyway" : 97