feat: view messaging service name on campaign details page for orgs with multiple msg services

[mkoontz-rewired]

Description

• If an org has multiple message services, we show this field on the campaign details page after the campaign has started. If the campaign's message service has a name, we show that. Otherwise, we show the id.

Motivation and Context

Closes #1582 Discussion context about how we came to the exact implementation details: https://rewiredcoop.slack.com/archives/C04L6F00LLA/p1686683852475219

How Has This Been Tested?

Locally w/ various messaging services states for my org. Let me know if there's something else I should do here.

Screenshots (if appropriate):

Documentation Changes

Checklist:

• [ ] My change requires a change to the documentation.
• [ ] I have included updates for the documentation accordingly.