[IMP] tools: avoid concurrent creation of the session_dir
[IMP] tools: avoid concurrent creation of the session_dir

Instead of:
1. testing the existance
2. creating the directory if not exists

(which would not work if a concurrent creation is done between step 1 and 2)

do:
1. try to create the directory
2. skip if it fails

Ask forgiveness, not permission

Closes #24210

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo