feat: require confirmation for user account deletion (#1009)

### This PR adds the necessary user friction in the Delete Dialog,
ensuring that users are intentionally deleting their accounts.

- User must disable 2FA to delete the account.


![2fa](https://github.com/documenso/documenso/assets/85569489/634fd9dd-2aea-4dd8-a231-ade82b71fc7d)

- Explicit user confirmation


![!2FA](https://github.com/documenso/documenso/assets/85569489/11a074b6-7ec7-4568-ba1a-ee884766047b)


fixes #998

packages/app-tests/e2e/test-delete-user.spec.ts

@@ -16,6 +16,8 @@ test('delete user', async ({ page }) => {
   });
 
   await page.getByRole('button', { name: 'Delete Account' }).click();
+  await page.getByLabel('Confirm Email').fill(user.email);
+  await expect(page.getByRole('button', { name: 'Confirm Deletion' })).not.toBeDisabled();
   await page.getByRole('button', { name: 'Confirm Deletion' }).click();
 
   await page.waitForURL(`${WEBAPP_BASE_URL}/signin`);