ui: Suspenseful loading

[mastercactapus]

Description:
Updates the UI to enable suspense for all urql queries.

As components are migrated from apollo to urql, they will automatically get tracked by suspense.

Notably, boundaries were added:

• Around the entire app for the Login switch, with a new RequireAuth component (instead of the redux mess)
• Around the title bar text
• Around the page content
• Around groups of dialog boxes

The QuerySelect tool explicitly turns off suspenseful loading as it handles loading state internally and shouldn't trigger a page-level (or dialog-level) spin.

Which issue(s) this PR fixes:
Part of #2557

Out of Scope:

• apollo queries will not trigger Suspense, so some pages still aren't as nice as they will be
• fetching/isLoading logic will still need to be removed/cleaned up separately
• Cleaning up redux usage around auth detection

Screenshots:

suspense-demo-3.mp4

Describe any introduced user-facing changes:

• Application-wide spinner will resolve once config has been loaded, or the Login page is ready
• Dialogs will not appear until their data has loaded (urql only)
• Title bar will be blank while the name is fetched, if missing (no "User" -> "Abigail" flicker)
• Pages using urql (and any nested components doing so) will spin until all content is loaded

Describe any introduced API changes:
N/A

Additional Info:
With suspense enabled, a useQuery will never return fetching: true you will always get data or error.

[Forfold]

LGTM, let's test in CI