[FIX] web: editable list, up/down navigation on m2o

The current behavior was allowing going on the previous row if the
user is at the start of an editable element and on the next row if the
user is at the end of an editable element. The problem was, we did not
want this behavior when the editable element is a select or m2o (as
the up and down input should open the select/m2o dropdown instead).

addons/web/static/src/js/views/list_view_editable.js

@@ -721,13 +721,13 @@ ListView.include(/** @lends instance.web.ListView# */{
     keyup_UP: function (e) {
         var self = this;
         return this._key_move_record(e, 'pred', function (el, cursor) {
-            return self._at_start(cursor, el);
+            return self._at_start(cursor, el) && !$(el).is('select,.ui-autocomplete-input');
         });
     },
     keyup_DOWN: function (e) {
         var self = this;
         return this._key_move_record(e, 'succ', function (el, cursor) {
-            return self._at_end(cursor, el);
+            return self._at_end(cursor, el) && !$(el).is('select,.ui-autocomplete-input');
         });
     },