Send meeting timer notification emails immediately

[Dschoordsch]

See Slack 🔒 for context.
As a facilitator receiving a timer notification email (your meeting is ready to be advanced) a day late after the meeting already ended is useless and confusing. Instead the email would be useful when the timer ran out.

Acceptance criteria

• when a long running timer runs out and the facilitator is not in the meeting, send the notification immediately
• when the meeting is already advanced to a different phase or closed, don't send an email

[jordanh]

scrubbed