Fix: disconnect correct client instance in zod test finally block

[Copilot]

In the can be constructed directly from client test, the const client declared inside the try block is not accessible in finally due to JS block scoping — so client.$disconnect() in finally was silently closing the outer beforeEach client instead, leaving the locally created client open.

Change

• Rename the inner variable to localClient and hoist it above the try block so finally closes the correct instance

// Before: inner `client` shadows outer, but isn't accessible in `finally`
try {
    const client = await createTestClient(schema); // ← not in scope below
    ...
} finally {
    await client.$disconnect(); // ← closes the *outer* beforeEach client
}

// After
const localClient = await createTestClient(schema);
try {
    ...
} finally {
    await localClient.$disconnect(); // ← closes the correct instance
}

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