[FIX] web_editor: add missing import

Thanks to my Linter...

addons/web_editor/models/ir_ui_view.py

@@ -2,11 +2,14 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
 import copy
+import logging
 from lxml import etree, html
 
 from odoo.exceptions import AccessError
 from odoo import api, models
 
+_logger = logging.getLogger(__name__)
+
 
 class IrUiView(models.Model):
     _inherit = 'ir.ui.view'