[FIX] mail: revert upload_attachment fix

Cookies should be used internally by the web UI. The server-side is not supposed to be aware of it at all.

Reverts:
odoo#88745

Based on odoo#93812
discussion. It has been decided to revert the fix to avoid further unattended behaviours.

closes odoo/odoo#100178

X-original-commit: bdde7dda7356744d459e3991a7f382fee42bf8c5
Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>
Signed-off-by: Yolann Sabaux (yosa) <yosa@odoo.com>

addons/web/controllers/binary.py

@@ -174,9 +174,7 @@ class Binary(http.Controller):
                 filename = unicodedata.normalize('NFD', ufile.filename)
 
             try:
-                cids = request.httprequest.cookies.get('cids', str(request.env.user.company_id.id))
-                allowed_company_ids = [int(cid) for cid in cids.split(',')]
-                attachment = Model.with_context(allowed_company_ids=allowed_company_ids).create({
+                attachment = Model.create({
                     'name': filename,
                     'datas': base64.encodebytes(ufile.read()),
                     'res_model': model,