supabase / supabase / 27153148512

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feat(studio): move /authorize to connect interstitial (#46359)

> [!CAUTION]
> The `do-not-merge` label has been applied because this contains mocks
for easier review and testing. I'll remove those mocks before merging.

## What kind of change does this PR introduce?

Feature. Part of the shared Connect UI (interstitial) rollout. Previous
slices: #46058, #45909, #45862.

## What is the current behavior?

The `/authorize` MCP/OAuth consent screen uses the old `Card`/`Alert`
layout.

## What is the new behavior?

- Wraps all `/authorize` states in `InterstitialLayout` (the shared
full-screen centered card used across Connect flows)
- Shows a quiet footnote below the Cancel button ("Authorizing will
redirect you to \<url\>") for non-localhost redirect URIs, so users can
verify the destination before approving. No extra friction for localhost
flows (local MCP servers)

| Before | After |
| --- | --- |
| <img width="692" height="997" alt="Authorize API access
Supabase-F6C3747A-5077-43D8-A509-3E16B1DDC168"
src="https://github.com/user-attachments/assets/e86dde34-94cb-48ef-b026-66aac9122df6"
/> | <img width="692" height="997" alt="Authorize API Access
Supabase-FE6FD8B3-1159-4EA5-94D7-EA5CEA7A25F3"
src="https://github.com/user-attachments/assets/c1a94a44-51d9-40d8-8046-f3104a27b929"
/> |
| <img width="692" height="997" alt="Authorize API access
Supabase-86742351-3521-4B62-AF87-403CB7E7F4F5"
src="https://github.com/user-attachments/assets/41cff7af-b9e4-4a20-a979-7148b4220265"
/> | <img width="692" height="997" alt="Authorize Cursor
Supabase-B665B4A4-600F-462B-8C97-84B171EC3103"
src="https://github.com/user-attachments/assets/804286f2-ce51-45ab-bb3f-315f8ac62445"
/> |
| <img width="692" height="997" alt="Authorize API access
Supabase-C73DC3D0-8646-4E6E-A259-3E84AE46DAF2"
src="https://github.com/user-attachments/assets/8f285edb-438f-4262-9faa-f1133c679ed4"
/> | <img width="692" height="997" alt="Authorize Cursor
Supabase-FEA86625-27D5-4DB5-B4D4-1A2CB804E56E"
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