Newest ComfyUI frontend update (partially) broke previews

[NuclearWaste02]

Expected Behavior
When having previews enabled during ksampler efficient generation, you used to be able to right click and "Open Image" on the finalized preview and view it in the web browser.

Actual Behavior
Now it only renders previews at an extremely low quality. Clicking "Open Image", "Save Image" or "Copy Image" all don't work anymore and redirect to a blob image instead of the local file in the temp folder.

Steps to Reproduce
Generate an image with a sampler that generates a realtime preview. Once the image is generated, right click on the preview and hit "Open Image".

Issue persists after latest update. This merge seemed to cause this issue.