[FIX] mail: auto subscription to channel

1. Install mail and hr
2. Create a new mail channel:
   name: test
   Who can follow: selected group of user
   Authorized group: Employee / Manager
   Auto subscription: Employee / Manager
3. Edit the Demo user, and add him to group Employee Managers

The Demo user is not subscribed to the channel (only Admin is)

In this case, the web client sends a `sel_groups_` key, which is not
handled by the `write` method.

Fixes #20897
opw-782301

0 files changed, 0 insertions, 0 deletions