[FIX] base: force user's group view update when deleting a module category

On the users' view, groups are shown grouped by application (module category).
Deleting a module category should, therefore, regenerate the view.

closes odoo/odoo#35181

Signed-off-by: Christophe Simonis <chs@odoo.com>

odoo/addons/base/models/res_users.py

@@ -1102,6 +1102,23 @@ class GroupsView(models.Model):
         return res
 
 
+class ModuleCategory(models.Model):
+    _inherit = "ir.module.category"
+
+    @api.multi
+    def write(self, values):
+        res = super().write(values)
+        if "name" in values:
+            self.env["res.groups"]._update_user_groups_view()
+        return res
+
+    @api.multi
+    def unlink(self):
+        res = super().unlink()
+        self.env["res.groups"]._update_user_groups_view()
+        return res
+
+
 class UsersView(models.Model):
     _inherit = 'res.users'