[14.0] web_notify_channel_message raising exception for non admin users

[remi-filament]

Module

web_notify_channel_message

Describe the bug

With this module installed a non admin user cannot send message on channels anymore, you get the following exception:

To Reproduce

Affected versions: 14.0, but the same occurs in #2542 for v15 and #2543 for v16

Steps to reproduce the behavior:

1. Install web_notify_channel_message or open v14.0 runboat (or one of the above PR runboat)
2. Connect with non admin user (for instance demo/demo)
3. Try sending a message on general channel
4. your get the above exception

Expected behavior
Users should still be able to post on general channels and everyone from channel should be notified.

[remi-filament]

ping @JordiBForgeFlow since you contributed the module
Thanks !

[DavidJForgeFlow]

Hi @remi-filament , check the following PRs that fixes this issues:
#2673 & #2674.
If this PRs are approved I will forward port to next versions!