`.value` is always bin size. By using `.raw_value` we allow the condition to be
true when actually using binary data.
This solves an issue when trying to display the image for a model being created
since at that time the URL does not work yet since the model does not exist.
Eg. website_sale extra images on product.
This also prevents (potentially a lot of) unnecessary GET to fetch images for
which we already have the binary data downloaded.
Part of task 34045
PR: #30881
Sébastien Theys
f78b7a76d6