feat(admin): bump react-router and adapt new routes package (#11887)

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **New Features**
  - Added new admin routes: "auth", "setup", and "notFound" for improved navigation and access within the admin interface.
  - Introduced a utility for simplified and flexible lazy loading of React components with fallback support.

- **Improvements**
  - Updated routing structure in the admin frontend for clearer route management and enhanced Sentry integration.
  - Centralized route definitions for easier maintenance and consistency.
  - Upgraded dependencies to support the latest React Router and React versions.
  - Enhanced asynchronous handling in setup form navigation.

- **Chores**
  - Updated project references and workspace dependencies for better package management.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/admin/package.json

@@ -7,6 +7,7 @@
     "@affine/core": "workspace:*",
     "@affine/error": "workspace:*",
     "@affine/graphql": "workspace:*",
+    "@affine/routes": "workspace:*",
     "@blocksuite/icons": "^2.2.12",
     "@radix-ui/react-accordion": "^1.2.2",
     "@radix-ui/react-alert-dialog": "^1.1.3",
@@ -50,7 +51,7 @@
     "react-dom": "^19.0.0",
     "react-hook-form": "^7.54.1",
     "react-resizable-panels": "^2.1.7",
-    "react-router-dom": "^6.28.0",
+    "react-router-dom": "^7.5.1",
     "sonner": "^2.0.0",
     "swr": "^2.2.5",
     "vaul": "^1.1.1",