supabase / supabase / 21621802301

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chore(studio): Replication UI updates for new replica CTA + URL query state handling (#42378)

## Context

Related to unifying read replicas into database replication page which
is currently in internal testing

## Changes involved

- Updates the "New replica" CTA in `DatabaseSelector` (e.g within the
SQL Editor) to link to the replication page instead of settings
infrastructure
- Refactor replication UI to use URL query states for new destination +
edit destination

## To test

- [ ] Verify that the "New replica" CTA links correctly to replication
page if flag is on
- [ ] Verify that new + edit destination UI works as expected
- Note that there's some server side validation for ETL replication now
so might be tricky to test creating an actual ETL replication
- Minimally can test creating a read replica and ensure that the UI
behaviour is all as expected

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

* **New Features**
* Added unified replication experience with URL-based state management
for destination creation and editing

* **Refactor**
* Simplified replication panel component interfaces and consolidated
destination data fetching logic
* Enhanced edit flows to leverage URL parameters for seamless navigation

* **Chores**
  * Marked legacy read replica creation panel as deprecated
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

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