[FIX] website_profile: fix another broken image thingy

As image fields have been renamed recently [1] we have to update controllers
of profile in order to write on image_1920, not image anymore.

Task 2067872 (eLearning internal testing)
Task 2058598 (survey internal testing)
PR #36756

[1] See 58a2ffa26f

addons/website_profile/controllers/main.py

@@ -137,10 +137,10 @@ class WebsiteProfile(http.Controller):
         }
 
         if 'clear_image' in kwargs:
-            values['image'] = False
+            values['image_1920'] = False
         elif kwargs.get('ufile'):
             image = kwargs.get('ufile').read()
-            values['image'] = base64.b64encode(image)
+            values['image_1920'] = base64.b64encode(image)
 
         if request.uid == user.id:  # the controller allows to edit only its own privacy settings; use partner management for other cases
             values['website_published'] = kwargs.get('website_published') == 'True'