When user access template at the time of export with deleted field.
The traceback will be generated.

To reproduce the issue(any model, here- 'account.move.line'):

- Install 'account_accountant' module
- Go to Settings > Technical > Database Structure > Fields
- Create a new field with model as 'Journal Item' and save
- Go to Accounting > Miscellaneous > Journal Items
- Select any record in list view and click on export and generate a new export
template with newly created field
- Go to 'ir.model.fields' and delete that field
- Go to 'Journal Items' and select that template while export

Error: A traceback appears: KeyError: 'tax_audit'

When a field gets deleted from 'ir.model.fields' but it does not get deleted
from export template. And selecting that template to export the records will
lead to traceback.

See -
https://github.com/odoo/odoo/blob/59669e9943158e51dcbb9ae69ad758df8f7c7976/addons/web/controllers/main.py#L1815-L1818



sentry-4331986723

closes odoo/odoo#134275

X-original-commit: 814fb43e
Signed-off-by: Julien Castiaux (juc) <juc@odoo.com>