[FIX] account: ensure followers are internal users

On invoices, we had cases where the supplier was added as a follower to
the invoice, and an email was sent to them.

This commit adds tests that reproduce the same follower assignment that
happened in saas-12.3, and fixes the issue for 13.0.

We also treat the case when custom_values is None (the default value),
and call the super method instead of just returning False.

Since saas-13.2, account.move.name is computed, so there is no default
value, and no need to specify it at the invoice creation.

closes odoo/odoo#49004

X-original-commit: 4a32716c0c57fe904e1aeea63926fb5b65e3516b
Signed-off-by: Laurent Smet <smetl@users.noreply.github.com>
Signed-off-by: Paul Morelle <madprog@users.noreply.github.com>

0 files changed, 0 insertions, 0 deletions