Raise non processed exceptions when they occur during load of records

It is needed to not bypass catch_error decorator.

Closes #13332
(grafted from 29a29ab9be793e2eaaee24b93c7871cd2897a3f9)

--HG--
branch : 7.0

tryton/tryton/gui/window/view_form/model/record.py

@@ -132,21 +132,22 @@ class Record:
             ctx.update(dict(('%s.%s' % (self.model_name, fname), 'size')
                     for fname, field in self.group.fields.items()
                     if field.attrs['type'] == 'binary' and fname in fnames))
-            exception = False
             try:
                 values = RPCExecute('model', self.model_name, 'read',
                     list(id2record.keys()), fnames, context=ctx,
                     process_exception=process_exception)
             except RPCException:
-                values = [{'id': x} for x in id2record]
-                default_values = dict((f, None) for f in fnames)
-                for value in values:
-                    value.update(default_values)
-                self.exception = exception = True
+                for record in id2record.values():
+                    record.exception = True
+                if process_exception:
+                    values = [{'id': x} for x in id2record]
+                    default_values = dict((f, None) for f in fnames)
+                    for value in values:
+                        value.update(default_values)
+                else:
+                    raise
             id2value = dict((value['id'], value) for value in values)
             for id, record in id2record.items():
-                if not record.exception:
-                    record.exception = exception
                 value = id2value.get(id)
                 if record and not record.destroyed and value:
                     for key in record.modified_fields: