Show parent section image in filtered results when product image filename is empty

[graphicz]

Client uses Sections for "ranges of products" and the main image is the section image, individual products do not generally have product images - but do sometimes.

How may I display the parent section image in filtered search results when the product image filename is empty?

Thank you!

[graphicz]

Apologies - duplicate post: see excellent reply from Norman here: https://community.sellerdeck.com/for...lts#post554002