ToC heading error in markdown comment

[choies1]

Description

Jupyter labs ToC recognizes the heading in the comment of markdown. ToC2 in the old Jupyter notebook didn't recognize the heading (#abc) inside markdown comments, which is inconvenient.

Reproduce

The following example shows an error in Jupyterlab's ToC when markdown has a heading inside a comment.

[Firefox 123.0(64bit)]

Expected behavior

Context

• Operating System and version: Windows 11
• Browser and version: Firefox 123.0(64bit), Chrome 122.0.6261.95 (64bit)
• JupyterLab version:

jupyter --version
Selected Jupyter core packages...
IPython          : 8.15.0
ipykernel        : 6.25.0
ipywidgets       : 8.0.4
jupyter_client   : 7.4.9
jupyter_core     : 5.3.0
jupyter_server   : 2.10.0
jupyterlab       : 4.1.2
nbclient         : 0.5.13
nbconvert        : 6.5.4
nbformat         : 5.9.2
notebook         : 7.1.0
qtconsole        : 5.4.2
traitlets        : 5.7.1