Re-enable 24/7 alarms on internal-messages_pubtrans-stop-estimate

[LofhJann]

Add action group 'Common solita alerts prod' to internal-messages_pubtrans-stop-estimate once investigated why alarm is throwing false alarms.

https://portal.azure.com/#@hslfi.onmicrosoft.com/resource/subscriptions/3adf24fa-bb03-4557-a83b-0e967840274e/resourceGroups/pulsar-prod/providers/Microsoft.Insights/metricalerts/Pulsar%20prod%20internal-messages_pubtrans-stop-estimate%20Msg%20Rate%20In/overview