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Describe the bug / provide steps to reproduce it

Zed does not appear to render png files that are listed in the markdown.

e.g. if png/myimage.png exists then <img src="png/myimage.png" /> should render the image in the preview.

I tested this in Zed and don't see the image.
The same markdown renders the image in VSCode.

Environment

Zed: v0.165.4 (Zed)
OS: Linux X11 pop 22.04
Memory: 23.3 GiB
Architecture: x86_64
GPU: Intel(R) Graphics (RPL-U) || Intel open-source Mesa driver || Mesa 24.0.3-1pop1171163555922.04~7a9f319

If applicable, add screenshots or screencasts of the incorrect state / behavior

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If applicable, attach your Zed.log file to this issue.

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