feat(prevent): Update repo selector for single app

[suejung-sentry]

We are moving to a single app (sentry gh app) instead of requiring both seer github app and sentry github app. As a result, we can just use existing endpoints (including search) for onboarded repos with sentry github integration. Cut over frontend to use those.

This PR includes:

1. Use existing integrations endpoints since we are now down to the single sentry github app to list orgs and repos
2. Add search to the repos toolbar for cases like in getsentry that has 1,000 repos
   • Note that repo names are stored as fully qualified name like getsentry/sentry ({ghorgname}/{ghreponame}) so do further filtering on client side so matches on the org name don't count as found repos.
3. Add infinite scroll to the repos toolbar dropdown
4. Save name instead of id as the org key. Need to go back to name unfortunately as the id is not queryable in sentry_integration table

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

Additional details and impacted files

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[ajay-sentry]

Are all these refs needed to manage the infinite scroll behavior?

[suejung-sentry]

Yeah, if get close to the bottom of the list, we trigger fetch of the next page of repos

[ajay-sentry]

nit: might be more apt to name this dropdown or selector rather than toolbar (assuming this is the repo selector component, if not then ignore me 😅 )

[suejung-sentry]

technically this component has both the org dropdown and the repo dropdown within it so may just leave it for now

[ajay-sentry]

ah okay sounds good

[ajay-sentry]

looks good!