fix images not displaying in preview mode

[RyanCoulsonCA]

Related Item(s)

432

Changes

• This PR fixes an issue where images were not appearing correctly in preview mode.

Testing

This is intended to fix an issue in the editor preview, so it won't be noticeable on the Storylines demo page. Just ensure that existing images are appearing as they were before.

Steps once we update the npm package in the editor repo:

1. Open the demo page.
2. Load a project and create a new image panel. Add an image and click the 'Preview' button in the top right.
3. Ensure that the image is displaying correctly.

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This change is 

[github-actions[bot]]

Your demo site is ready! 🚀 Visit it here: https://ramp4-pcar4.github.io/story-ramp/fix-432/#/en/00000000-0000-0000-0000-000000000000