Summary

This PR updates the pattern prop of the Image editor component and fixes the issue #7575.

The problem was that the previous regex pattern expected the image Markdown to occupy the entire string, using ^ at the start and $ at the end. As a result, images embedded in Markdown blocks with preceding or trailing text, blank lines, or paragraphs were not detected, breaking the editor preview for these images.

The proposed solution removes the $ anchor at the end and uses a global regex that matches images anywhere in the Markdown block. This ensures that images like:

Lorem ipsum text

![Alternative text](/media/foo.png)

More text

are correctly recognized by the Image editor component and rendered in both the rich text editor and preview pane.

Test plan

• Verified that Markdown containing images between paragraphs renders correctly in the editor.
• Confirmed that newly uploaded images (blobs) appear immediately in the preview.
• Existing images continue to render correctly without changes to Markdown.

Here is an example of the Docusaurus demo content with an image between paragraphs:

Checklist

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• I have read the contribution guidelines.