fix(u2f): Have authenticators GET wait for preloading to finish

[schew2381]

In order to have the U2F state be correctly set in the client browser session cookie, we need to wait for preloading requests to finish first to avoid a race condition. This was done by:

1. Converting the sudo modal to a functional component so we can use useContext in it https://github.com/getsentry/sentry/pull/71100
2. Keeping track of when the preloading finishes with a hook in the organizationLoadingContext https://github.com/getsentry/sentry/pull/71112
3. Finally this PR, which finally has the U2F utilize the hook to wait for preloading to finish before making an authenticators GET request

Note that the PRs mentioned above must be merged first

Local Example

https://github.com/getsentry/sentry/assets/67301797/fef1a475-4e07-40ca-9741-03f6b463d5f7

[codecov[bot]]

Bundle Report

Changes will increase total bundle size by 20.34kB :arrow_up:

Bundle name	Size	Change
app-webpack-bundle-array-push	27.69MB	20.34kB :arrow_up:

[getsentry-bot]

PR reverted: 1fc431c28f3d98e80f2e81e64aed90363130d859