[bug] Admonition processing and mkdocstrings

[wfondrie]

Currently (v0.6.0), admonition processing causes a error when interacting with markdown files intended to be processed with mkdocstrings.

Here is an MRE using uv:

#!/usr/bin/env bash

uv init --package foo
cd foo
uv add mkdocs 'mkdocstrings[python]' 'mkquartodocs==0.6.0'
uv run mkdocs new .
touch docs/bar.qmd

# Add a Python function:
cat > src/foo/main.py << EOL
def greet(name: str) -> str:
    """Return a greeting message.

    Args:
        name (str): The name of the person to greet.

    Returns:
        str: A greeting message.
    """
    return f"Hello, {name}!"
EOL

# Add config
cat >> mkdocs.yml << EOL
plugins:
  - mkquartodocs:
      ignore_pattern: "docs/index.md"
  - mkdocstrings:
      default_handler: python
EOL

# Add an mkdocstrings admonition to index.md
echo "::: foo.main.hello" >> docs/index.md

# Build the docs
uv run mkdocs build

This results in the following error:

INFO    -  mkquartodocs: Updating directory context
INFO    -  mkquartodocs: [PosixPath('/Users/wfondrie/scratch/reprex/foo/docs/bar.md')]
INFO    -  Cleaning site directory
INFO    -  Building documentation to directory: /Users/wfondrie/scratch/reprex/foo/site
INFO    -  mkquartodocs: Running <mkquartodocs.extension.AdmotionCellDataPreprocessor
           object at 0x103f4c910>
ERROR   -  Error reading page 'index.md': Cell data contains admonition: [':::
           foo.main.hello']
Traceback (most recent call last):
  File "/Users/wfondrie/scratch/reprex/foo/.venv/bin/mkdocs", line 10, in <module>
    sys.exit(cli())
             ^^^^^
  File "/Users/wfondrie/scratch/reprex/foo/.venv/lib/python3.11/site-packages/click/core.py", line 1462, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/wfondrie/scratch/reprex/foo/.venv/lib/python3.11/site-packages/click/core.py", line 1383, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/Users/wfondrie/scratch/reprex/foo/.venv/lib/python3.11/site-packages/click/core.py", line 1850, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/wfondrie/scratch/reprex/foo/.venv/lib/python3.11/site-packages/click/core.py", line 1246, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/wfondrie/scratch/reprex/foo/.venv/lib/python3.11/site-packages/click/core.py", line 814, in invoke
    return callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/wfondrie/scratch/reprex/foo/.venv/lib/python3.11/site-packages/mkdocs/__main__.py", line 288, in build_command
    build.build(cfg, dirty=not clean)
  File "/Users/wfondrie/scratch/reprex/foo/.venv/lib/python3.11/site-packages/mkdocs/commands/build.py", line 310, in build
    _populate_page(file.page, config, files, dirty)
  File "/Users/wfondrie/scratch/reprex/foo/.venv/lib/python3.11/site-packages/mkdocs/commands/build.py", line 167, in _populate_page
    page.render(config, files)
  File "/Users/wfondrie/scratch/reprex/foo/.venv/lib/python3.11/site-packages/mkdocs/structure/pages.py", line 285, in render
    self.content = md.convert(self.markdown)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/wfondrie/scratch/reprex/foo/.venv/lib/python3.11/site-packages/markdown/core.py", line 354, in convert
    self.lines = prep.run(self.lines)
                 ^^^^^^^^^^^^^^^^^^^^
  File "/Users/wfondrie/scratch/reprex/foo/.venv/lib/python3.11/site-packages/mkquartodocs/extension.py", line 442, in run
    raise ValueError(f"Cell data contains admonition: {bads}")
ValueError: Cell data contains admonition: ['::: foo.main.hello']

I think the change that needs to happen is just making the ignore_pattern apply to admonition processing as well.