Frontend changes for new privatelink functionality.
The updates to the API are already live, but will be putting the UI
changes behind a feature flag while we do some full end to end testing.
Changes to Integration page:
<img width="744" height="456" alt="image"
src="https://github.com/user-attachments/assets/02026083-4b61-4f36-927b-1bac42cb73e2"
/>
Changes to create associations page:
<img width="859" height="411" alt="image"
src="https://github.com/user-attachments/assets/303b4ec5-3b5a-4eaf-8d22-45e1e63a0705"
/>
Fixes SEC-919
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- AWS PrivateLink connections can target the primary database or a read
replica.
- Connection lists and confirmation dialogs now identify the selected
database clearly.
- Replica details include improved status information and a “Manage
replica” link.
- **Bug Fixes**
- Replica removal errors now provide clearer guidance and link to
integration settings when PrivateLink issues occur.
- **Updates**
- Infrastructure diagrams focus on visualization, with replica
management actions moved to dedicated management views.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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Co-authored-by: Joshen Lim <joshenlimek@gmail.com>
