feat: make 2fa great again

[zlwaterfield]

Changes

This PR provides a bunch of 2fa improvements - follow up to #26526

• more consistent naming across variables, components, endpoints, etc.
• pull together all modals into a single reusable one
• improve styling of 2fa related ui
• allows backup codes to be used
• reduces back up codes down to 5

Questions

• what security implications should we be thinking about?
  • blocking delete 2fa and generate/re-generate backup codes with the time sensitive auth check
  • sending emails when 2fa added, remove, or backup code used.

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Does this work well for both Cloud and self-hosted?

It doesn't have an impact

How did you test this code?

Lots of manual testing + added tests

[posthog-bot]

📸 UI snapshots have been updated

4 snapshot changes in total. 0 added, 4 modified, 0 deleted:

• chromium: 0 added, 4 modified, 0 deleted (diff for shard 1)
• webkit: 0 added, 0 modified, 0 deleted

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[github-actions]

Size Change: -30 B (0%)

Total Size: 1.11 MB

ℹ️ View Unchanged

Filename	Size	Change
frontend/dist/toolbar.js	1.11 MB	-30 B (0%)

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[Twixes]

It's great. Not even again, more for the first time

[benjackwhite]

One non blocking thing. This is awesome work.

[posthog-bot]

📸 UI snapshots have been updated

102 snapshot changes in total. 0 added, 102 modified, 0 deleted:

• chromium: 0 added, 101 modified, 0 deleted (diff for shard 1, diff for shard 2)
• webkit: 0 added, 1 modified, 0 deleted (diff for shard 2)

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[posthog-bot]

📸 UI snapshots have been updated

18 snapshot changes in total. 0 added, 18 modified, 0 deleted:

• chromium: 0 added, 18 modified, 0 deleted (diff for shard 1, diff for shard 2)
• webkit: 0 added, 0 modified, 0 deleted

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[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ KeyError: 'django_two_factor-hex' /api/users/{uuid}/two_factor_validate/ View Issue

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