[FIX] note: broken kanban view

The view is broken because read_progress_bar() calls read_group() with
two groupbys in eager mode.  The method read_group() is overridden for
model `note.note` and does not handle that case: the returned result is
incorrect.  We modify the override to call the default read_group() in
that case, which eventually fails and makes read_progress_bar() fall
back on its naive implementation.

closes odoo/odoo#73839

X-original-commit: 6443e22feea914639f143a94a802b52a74a8ce19
Signed-off-by: Raphael Collet (rco) <rco@openerp.com>

addons/note/models/note.py

@@ -83,7 +83,7 @@ class Note(models.Model):
 
     @api.model
     def read_group(self, domain, fields, groupby, offset=0, limit=None, orderby=False, lazy=True):
-        if groupby and groupby[0] == "stage_id":
+        if groupby and groupby[0] == "stage_id" and (len(groupby) == 1 or lazy):
             stages = self.env['note.stage'].search([('user_id', '=', self.env.uid)])
             if stages:  # if the user has some stages
                 result = [{  # notes by stage for stages user