Reproduce: tryShutdown freeze app

[huan]

TO: @murgatroid99

Here's how to reproduce the issue

• @grpc/grpc-js: tryShutdown freeze app  grpc/grpc-node#1458

Reproduce steps

Branch: https://github.com/wechaty/puppet-service/tree/try-shutdown

git clone git@github.com:wechaty/puppet-service.git
cd puppet-service
git checkout try-shutdown
npm install // Node.js v16+ and NPM v7+ required

// The below test will block forever
./tests/grpc-stream.spec.ts 

Related Code

Please see the commit:

• 517b781

If we comment out those lines, then the test will be able to finish.

Related to:

• grpc.tryShutdown() never return if client close the connection. #176

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