Issue:
------
When adding a file to an employee's work permit ("Private Information tab"),
the file name is the "value" of the file.
This is not meaningful for the user who will download the file.
Solution:
---------
Use the `filename` attribute to determine the field of `hr.employee`
to be used to get the file name.
As the original file name doesn't exist in an existing field,
we can use a "generic" file name with a non-stored computed field.
opw-3458842
closesodoo/odoo#133981
X-original-commit: 2f49ec86fcd8191f92153069ae242c329a5cdf0c
Signed-off-by: Sofie Gvaladze (sgv) <sgv@odoo.com>
Signed-off-by: Thomas Lefebvre (thle) <thle@odoo.com>