[BUG] New Notification channel types wont be usable and crashes monitor page

[lezzago]

What is the bug?
When choosing a new Notification channel type that was not supported by Alerting before 2.0, the UI page crashes, since we had the channel types hard-coded. This would crash for SES, SNS, and Microsoft teams.

What is the expected behavior?
Update the logic so the channel types are not hard-coded, so we can continuously support the new channel types that the Notification plugin adds.

[lezzago]

#692 is a related issue.

[lezzago]

Another related issue: #529

[xluo-aws]

@lezzago , @praveensameneni , can this bug be fixed in 2.11? Some users are looking forward for it. opensearch-project/notifications#585

[sandervandegeijn]

Would like very much for this to be fixed. Can't use teams as it is now, waste of the hard work :)

[lezzago]

This has been fixed for 2.11 now.

[sandervandegeijn]

Fantastic thanks!