feat(drizzle): add uuidv7 support (#16113)

## Goal

Let projects use **UUID v7** (time-ordered UUIDs) for collection IDs via
`idType: 'uuidv7'` on Postgres-related adapters (and SQLite wiring),
while keeping the same storage shape as v4 UUIDs (native `uuid` on
Postgres, text on SQLite).

### What?

- Adds a new adapter option `idType: 'uuidv7'` alongside existing
`'serial' | 'uuid'` (Postgres) and `'number' | 'uuid'` (SQLite).
- Generates IDs in application code with `uuid` package `v7()` (not
database-native), so older Postgres versions are still supported.
- Reuses the same Drizzle column modeling as UUID v4 where appropriate
(`defaultV7` on the raw column, `$defaultFn` / generated schema code).
- Adds integration tests behind `PAYLOAD_DATABASE=postgres-uuidv7` and a
test adapter preset `postgres-uuidv7`.

### Why?

UUID v7 is sortable by creation time and tends to be friendlier for
B-tree indexes than random UUID v4, without changing the wire format or
Postgres column type.

### How?

- Bump `uuid` in `@payloadcms/drizzle` to a version that exports `v7`.
- Extend TypeScript `idType` unions and `UUIDRawColumn` with
`defaultV7`.
- In schema builders (`setColumnID`, `buildDrizzleTable`,
`columnToCodeConverter`), set app-side defaults for v7; treat `uuidv7`
like `uuid` for relationships and query sanitization via a small
`isUUIDType` helper and `getCollectionIdType` mapping to `'text'`.



Fixes #11449

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Co-authored-by: Sasha Rakhmatulin <sasha@ritsuko.dev>