Avoid duplicate email notification on workflow rerun

[badhezi]

Attempt to address #35556

When triggering a job re-run, we send a duplicate email notification in case the previous state of the job (prior to the re-run), required an email notification.

This change just sets the job status to waiting before all the notifiers evaluation so it will only notify at the end of the job run with the updated status.

[badhezi]

@ChristopherHX I took a simpler approach by checking if the workflow has just been rerun in MailActionsTrigger and skip just the email composition part in that case, this should leave existing notifiers as-is and just skip the email send on reruns. Hopes this address the issue without any unwanted behavior change.