refactor: Inject io into maintenance page domain

[ksugden]

Addresses DBTP-

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Checklist:

Title:

• Scope included as per conventional commits
• Ticket reference included (unless it's a quick out of ticket thing)

Description:

• Link to ticket included (unless it's a quick out of ticket thing)
• Includes tests (or an explanation for why it doesn't)
• If the work includes user interface changes, before and after screenshots included in description
• Includes any applicable changes to the documentation in this code base
• Includes link(s) to any applicable changes to the documentation in the DBT Platform Documentation (can be to a pull request)

Tasks:

• Run the end to end tests for this branch and confirm that they are passing