## Context
As per PR title - brings Database Connections into feature preview
Should be working for both hosted + self-host/local
Also adjusts existing feature previews to remove "New"
- Platform webhooks
- Temporary database access
<img width="600" alt="image"
src="https://github.com/user-attachments/assets/b18ae8ca-ce0b-4649-975c-e70749a87dcd"
/>
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **New Features**
* Added a Database Connections preview highlighting live activity, query
blocking detection, session termination, and AI-assisted summaries.
* Added access to project-specific observability connections from the
preview.
* Added a Database Connections entry to the observability menu when
enabled.
* **Improvements**
* Updated feature previews and labels, including changes to “new” status
indicators.
* Added controls to manage Database Connections preview visibility.
* **Bug Fixes**
* Improved blocker detection so results respect the selected role
filters.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## Context
Just refactors `ObservabilityMenu` to retrieve the menu items via a hook
+ scaffold the Top for Postgres menu item
No functional changes here
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added a keyboard shortcut (`U`, then `C`) for quickly opening
Observability Connections.
* Improved observability navigation with feature-aware sections and
consistent URL parameter preservation.
* Custom reports are now sorted alphabetically and include available
actions directly in the menu.
* **Bug Fixes**
* Improved handling of missing report details and duplicate or
unsupported query parameters.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.
YES
## What kind of change does this PR introduce?
- refactor navigation utils to pass in is_platform
- write unit tests for configuration returns
- default is always passed from constant IS_PLATFORM
Joshen Lim