[FIX] base: ir_ui_view unescape %% in dev mode

In dev mode with xml feature, we read the xml from file directly.
%% should be unescape to get % instead.

odoo/addons/base/ir/ir_ui_view.py

@@ -201,7 +201,7 @@ def replacer(m):
                 fullpath = get_resource_path(*view.arch_fs.split('/'))
                 arch_fs = get_view_arch_from_file(fullpath, view.xml_id)
                 # replace %(xml_id)s, %(xml_id)d, %%(xml_id)s, %%(xml_id)d by the res_id
-                arch_fs = arch_fs and resolve_external_ids(arch_fs, view.xml_id)
+                arch_fs = arch_fs and resolve_external_ids(arch_fs, view.xml_id).replace('%%', '%')
             view.arch = arch_fs or view.arch_db
 
     def _inverse_arch(self):