[Clean up] Organize test snapshots under folder structure

[compulim]

Is your feature request related to a problem?

Currently, it is very difficult to see what screenshot files belongs to which HTML.

Maybe we should organize the PNGs to be next to the HTML and have a folder structure around it. jest-image-snapshot prefer flat folder structure.

Describe the suggestion or request in detail

No response

Describe alternatives you have considered

No response

Additional context

No response