[Bug] Jest detects open handles

Getting this warning when running a simple test with the test environment:

 $ ./node_modules/.bin/jest --detectOpenHandles

...
Jest has detected the following 1 open handle potentially keeping Jest from exiting:

  ●  neon threadsafe function
...

Code for reproduction:

import { TestWorkflowEnvironment } from '@temporalio/testing';
import { Worker, Runtime, DefaultLogger, LogEntry } from '@temporalio/worker';
import { someWorkflow } from './workflows';

let testEnv: TestWorkflowEnvironment;

beforeAll(async () => {
  // Use console.log instead of console.error to avoid red output
  // Filter INFO log messages for clearer test output
  Runtime.install({
    logger: new DefaultLogger('WARN', (entry: LogEntry) => console.log(`[${entry.level}]`, entry.message)),
  });

  testEnv = await TestWorkflowEnvironment.createTimeSkipping();
});

afterAll(async () => {
  await testEnv?.teardown();
});

test('some random test', async () => {
  const { client, nativeConnection } = testEnv;
  const worker = await Worker.create({
    connection: nativeConnection,
    taskQueue: 'test',
    workflowsPath: require.resolve('./workflows'),
    activities: {
      // ...
    },
  });

  await worker.runUntil(async () => {
    const result = await client.workflow.execute(someWorkflow, {
      args: [],
      workflowId: 'money-transfer-test-workflow',
      taskQueue: 'test',
    });

    expect(result).toEqual('test');
  });
});