Just a FYI for anyone stumbling across this post.
I was able to figure it out myself.
The files to be edited are the product-grid-add.liquid
Search for {{ product.url | within: collection }} in these files and change it from:
{{ ‘products.product.select_option’ | t }}
to:
{{ ‘products.product.select_option’ | t }}
and product-listing.liquid change