Previously, access_token were linked to tables. These tables were linked
to a floor_plan, which could be linked to several pos_configs.
The only way to access the self-order was to obtain a valid table
access_token. This behaviour was not correct because sometimes we would
allow table selection directly in the interface or commands without
a table.
Now, access_token is managed by pos_config. When a user has this token,
they can place commands and select the table they want if the option is
enabled.
closesodoo/odoo#126186
Signed-off-by: Joseph Caburnay (jcb) <jcb@odoo.com>