cairo and skia backends fail to render flag emojis with latest Noto: `'NoneType' object has no attribute 'path'`

[afontenot]

Reproduction steps:

python -m venv venv
source venv/bin/activate
pip install blackrenderer skia-python
curl -JORL 'https://github.com/googlefonts/noto-emoji/raw/refs/heads/main/fonts/Noto-COLRv1.ttf'
blackrenderer --backend skia Noto-COLRv1.ttf 🇦🇨 flag.png

Traceback:

Traceback (most recent call last):
  File "/home/user/downloads/throwaway/venv/bin/blackrenderer", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "/home/user/downloads/throwaway/venv/lib/python3.13/site-packages/blackrenderer/__main__.py", line 43, in main
    renderText(
    ~~~~~~~~~~^
        args.font,
        ^^^^^^^^^^
    ...<7 lines>...
        backendName=args.backend,
        ^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/home/user/downloads/throwaway/venv/lib/python3.13/site-packages/blackrenderer/render.py", line 78, in renderText
    font.drawGlyph(glyph.name, canvas, palette=palette)
    ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/downloads/throwaway/venv/lib/python3.13/site-packages/blackrenderer/font.py", line 166, in drawGlyph
    self._drawGlyphCOLRv1(glyph, canvas)
    ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/home/user/downloads/throwaway/venv/lib/python3.13/site-packages/blackrenderer/font.py", line 191, in _drawGlyphCOLRv1
    self._drawPaint(glyph.Paint, canvas)
    ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/downloads/throwaway/venv/lib/python3.13/site-packages/blackrenderer/font.py", line 211, in _drawPaint
    drawHandler(paint, canvas)
    ~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/home/user/downloads/throwaway/venv/lib/python3.13/site-packages/blackrenderer/font.py", line 356, in _drawPaintComposite
    self._drawPaint(paint.SourcePaint, canvas)
    ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/downloads/throwaway/venv/lib/python3.13/site-packages/blackrenderer/font.py", line 211, in _drawPaint
    drawHandler(paint, canvas)
    ~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/home/user/downloads/throwaway/venv/lib/python3.13/site-packages/blackrenderer/font.py", line 356, in _drawPaintComposite
    self._drawPaint(paint.SourcePaint, canvas)
    ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/user/downloads/throwaway/venv/lib/python3.13/site-packages/blackrenderer/font.py", line 211, in _drawPaint
    drawHandler(paint, canvas)
    ~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/home/user/downloads/throwaway/venv/lib/python3.13/site-packages/blackrenderer/font.py", line 232, in _drawPaintLinearGradient
    canvas.drawPathLinearGradient(
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        self.currentPath,
        ^^^^^^^^^^^^^^^^^
    ...<4 lines>...
        self.currentTransform,
        ^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/home/user/downloads/throwaway/venv/lib/python3.13/site-packages/blackrenderer/backends/skia.py", line 119, in drawPathLinearGradient
    self.canvas.drawPath(path.path, skia.Paint(AntiAlias=True, Shader=shader))
                         ^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'path'

[afontenot]

Here's a list of all the emoji that fail to render for me with Skia:

🇦🇨🇦🇪🇦🇬🇦🇱🇦🇴🇦🇷🇦🇹🇦🇼🇦🇿🇧🇧🇧🇪🇧🇬🇧🇮🇧🇱🇧🇳🇧🇶🇧🇸🇧🇻🇧🇾🇨🇦🇨🇩🇨🇬🇨🇮🇨🇱🇨🇳🇨🇵🇨🇺🇨🇼🇨🇾🇨🇿🇩🇬🇩🇰🇩🇴🇪🇦🇪🇪🇪🇭🇪🇸🇪🇺🇫🇯🇫🇲🇫🇷🇬🇧🇬🇪🇬🇬🇬🇮🇬🇲🇬🇵🇬🇷🇬🇹🇬🇼🇭🇰🇭🇳🇭🇹🇮🇨🇮🇪🇮🇲🇮🇴🇮🇷🇮🇸🇯🇪🇯🇴🇰🇪🇰🇭🇰🇲🇰🇵🇰🇼🇰🇿🇱🇧🇱🇮🇱🇷🇱🇹🇱🇻🇲🇦🇲🇩🇲🇫🇲🇭🇲🇱🇲🇳🇲🇵🇲🇷🇲🇹🇲🇻🇲🇽🇲🇿🇳🇨🇳🇫🇳🇮🇳🇱🇳🇵🇳🇺🇴🇲🇵🇪🇵🇬🇵🇰🇵🇲🇵🇷🇵🇹🇵🇾🇷🇪🇷🇸🇷🇼🇸🇧🇸🇩🇸🇬🇸🇮🇸🇰🇸🇲🇸🇴🇸🇸🇸🇻🇸🇾🇹🇦🇹🇩🇹🇬🇹🇯🇹🇱🇹🇲🇹🇴🇹🇹🇹🇼🇺🇦🇺🇲🇺🇸🇺🇿🇻🇨🇻🇬🇻🇳🇼🇫🇽🇰🇾🇹🇿🇲🎛🎟🎫🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿👓💻📖📜📠📦📰🕰🖥🖲🗒🗞🚸🛼🦎🧑🏻‍🎄🧑🏼‍🦳🧑🏾‍🎄🧑🏿‍🦳🩲🪂🪢🪦⏏⚠

Versions:

• Python 3.13.5
• freetype2 2.13.3