fix(e2e): use non-burner email domain in mock data

The mock email generator used @example.com which is classified as a
burner email domain by burner-email-providers. This caused the
verifyEmailAddress check in remix-auth-email-link to reject login
attempts for seed users (member-no-transaction, member-edit, etc.),
breaking the Playwright global setup login flow.

Switch to @rumahberbagi.test which is not in the burner list.

Author: wheeljackz

app/models/__mocks__/mock-data.ts

@@ -9,7 +9,7 @@ export function pick<T>(values: readonly T[]) {
 }
 
 export function mockEmail() {
-  return `user-${generateId()}@example.com`
+  return `user-${generateId()}@rumahberbagi.test`
 }
 
 export function mockName(prefix = 'Item') {