## Which issue(s) this PR closes
This is a quick db migration follow-up to
https://github.com/grafana/oncall/pull/5382. It's mostly just an
enhancement. Basically #5382 had created a new/non-default route for
each Direct Paging integration. However, I overlooked actually setting
the chatops/escalation chain data for this new route:

This PR simply updates the recently created non-default direct paging
integration route, such that, to start, direct paging a team has no
escalation/notification difference whether the user doing the direct
paging sets important = True or False. From here, teams can modify these
routes to their needs (ex. setup and assign different escalation chains
for these different routes).
## Checklist
- [ ] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
show up in the autogenerated release notes.