Model.save()/asave() deprecation allows duplicate arguments

[Adam Johnson]

Follow-up to #35554.

The deprecation code from #35060 allows duplicate arguments between the positional and keyword variants. For example, Model.save(True, force_insert=False) tries to set force_insert to True positionally and False by keyword.

This should be detected and raised as a TypeError, like Python would normally do.

[Natalia <124304+nessita@…>]

In 432b069b:

[5.1.x] Fixed #35561 -- Made *args and kwargs parsing more strict in Model.save()/asave().

Backport of e56a32b89bb7fadffdfaa2cdf12b4863ccd5af9b from main.

[Natalia Bidart]

Fixed in main in e56a32b89bb7fadffdfaa2cdf12b4863ccd5af9b.

[GitHub <noreply@…>]

In a5215f9a:

Refs #35561 -- Renamed Model.save()/asave() helper to a more specific name.