[FIX] modules: load demo data fallback

- Create a new DB with `base_automation`, without demo data
- Switch to developer mode
- Go to Settings, then 'Load demo data', validate

A traceback occurs.

An error since the demo data in `base_automation_demo.xml` are pointing
to `model_base_automation_lead_test`, which is a test model. It is
therefore not created whithout demo data. The error is:

```
bad query: b'RELEASE SAVEPOINT "5159....."'
```

However, that's not the real crash. Indeed, in case the installation of
demo data crashes, `demo_failure_todo` is supposed to handle the
situation like a boss. But in this case, the DB cursor seems unusable.
Therefore, the following crashes like a gros caca:

``` python
todo = env.ref('base.demo_failure_todo', raise_if_not_found=False)
```

Solution: use a new cursor.

opw-1916918

closes odoo/odoo#29528

0 files changed, 0 insertions, 0 deletions