Revision on 41fe7f9d11
This commit intended to reduce the network load when reading records with
binary fields. This was made possible by enforcing the contextual key
`bin_size` to be set for records with binary fields.
However, it is causing some issues (see #22222, #22231) which are:
- write with bin_size:true generates a traceback
- read/search_read with bin_size:true breaks some images
on some views (e.g. base.view_partner_form)
Since the problems outweight the gain of these changes, we revert them.