fumadocs-preview: SVG images not rendered

### To Reproduce 1. https://stackblitz.com/edit/stackblitz-starters-jpdbkkpt?file=index.md 2. `npx fumadocs-preview` <img width="1004" height="588" alt="Image" src="https://github.com/user-attachments/assets/2337d0b1-c6e2-4bbe-a22b-c5f53ffe4b10" /> ### Current vs. Expected behavior **Current**: SVG images do not appear in the rendered page. PNG images render correctly. **Expected**: SVG images render the same way other image formats do. ### Provide environment information ```bash fumadocs-preview: 0.1.2 node: 22.22.0 (StackBlitz Node container) Browser: any ``` ### Which area(s) are affected? (Select all that apply) Not sure ### Additional context _No response_