scenario: open customer form by clicking new customer button and select
image and again click on image which will open file explore, now click
cancel button in file explorer which means we do not want to change
image, it will throw traceback.

traceback should not be thrown if image is not selected from file explorer
which will be fixed with this commit.

task-2412485

closes odoo/odoo#65978

X-original-commit: 9993d651
Signed-off-by: pimodoo <pimodoo@users.noreply.github.com>