Nicolas Lempereur
b8c8eaa02f
Introduce back part of `formatBinary` that was reverted with 7813a8e7.
When an image is unset, the value was `false` which would end up with a
bin_size of `NaN Bytes` which would end up displaying an error image
with source `data:image/png;base64,NaN Bytes`.
This commit get back a previous behavior so the bin_size when the
attachment does not exist is an empty string (so: '').
opw-805542
closes #22348