[FIX] base: enforce deterministic view inheritance

If multiple views had the same name and same priority, the order
of application of their xpath was not deterministic. That may be a
big deal if both of them were doing xpath with position = inside.

odoo/addons/base/ir/ir_ui_view.py

@@ -131,7 +131,7 @@ TRANSLATED_ATTRS_RE = re.compile(r"@(%s)\b" % "|".join(TRANSLATED_ATTRS))
 
 class View(models.Model):
     _name = 'ir.ui.view'
-    _order = "priority,name"
+    _order = "priority,name,id"
 
     # Holds the RNG schema
     _relaxng_validator = None