Default slack /escalate commands to Important

[qubitspace]

What would you like to see!

I would like to make the default importance for slack /escalate commands to Important. People aren't familiar with the difference and escalate with the default notification policy instead of with the important notification policy. For our company (the trade desk) we want to be able to set the /escalate slack slash command to default the to the important notification policy.

Product Area

Chatops

Anything else to add?

No response

[github-actions]

The current version of Grafana OnCall, at the time this issue was opened, is v1.4.4. If your issue pertains to an older version of Grafana OnCall, please be sure to list it in the PR description. Thank you 😄!