## Context
Previous PR was [here](https://github.com/supabase/supabase/pull/45143)
but it got stale with lots of conflicts so figured it'll be easier redo
it off the latest master
Moves policies page from Auth to Database under an Access Control
section along with Roles. This moves all existing files, applies
redirects, and updates urls to point to the new route
<img width="274" height="412" alt="image"
src="https://github.com/user-attachments/assets/7952c185-64ae-4355-ba36-45397efe1787"
/>
<img width="453" height="471" alt="image"
src="https://github.com/user-attachments/assets/04b3dcb3-48a5-4049-9893-d01109fb46a9"
/>
## To test
- [ ] Verify that policies now live under Database correctly
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added a quick navigation shortcut to open **Database > Policies
(RLS)**.
* **Bug Fixes**
* Updated Policies and RLS-related links across the product to open the
**Database policies** area (menus, command palette, context actions,
alerts, and link-outs).
* Added a permanent redirect from the old **auth policies** URL to the
new **database policies** URL.
* **Documentation**
* Updated RLS Dashboard and security checklist instructions to reference
**Database > Policies**.
* **Tests**
* Adjusted automated tests to validate the new Policies route.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
* Add flags for policies, third party auth, and manual linking + providers in sign in page
* Add flag for rate limitm page
* Add UnknownInterface components
* Update comment
* Flip flags to true
* Add flags for realtime policies and reports page
* Temp
* Add flag for sign in providers page
* Add flag for stripe wrapper
* Add flag for custom domains
* Add flag for dedicated ipv4 address addon
* Add empty state for realtime policies
* Add empty state for reports page
* Add flag for disable legacy JWT keys section
* Add flag for legacy jwt keys
* nit
* Remove ConnectionStringMoved call out
* Add flag for project settings log drains
* Add flag for subscription link in project settings
* Deprecate settings/auth page and redirect directly to auth page
* Flip back flags
* Add flags for account preferences analytics marketing and account deleetion
* Remove 'table_editor:enable_rls_toggle' flag and revert UI changes
* Remove 'authentication:policies' flag and revert UI changes
* Add flags for cmd K routes
* Add flags for instance size in infra settings
* Small refactor to DisplayApiSettings, decouple ToggleLegacyApiKeysPanel from it
* Have project_connection:javascript_example toggle code example title to TS
* add flag for templates dropdown in logs explorer
* UsesOverview only show link to providers page if providers is enabled
* API Docs UserManagement to only include docs on third party auth if providers is enabled
* Hide instance size on project card if flag is off
* Fix cmd k for roles, update redirect link from settings/auth to auth/providers
Joshen Lim