HandleScope Entering the V8 API without proper locking in place

Hello, I am intermittently encountering an issue that appears to originate from the listener callback.

```
FATAL ERROR: HandleScope::HandleScope Entering the V8 API without proper locking in place
----- Native stack trace -----

1: 0xf410aa node::OnFatalError(char const*, char const*) [node]
2: 0x1389184 v8::Utils::ReportApiFailure(char const*, char const*) [node]
3: 0x138ab3e v8::EscapableHandleScopeBase::EscapableHandleScopeBase(v8::Isolate*) [node]
4: 0x103cd2a napi_open_escapable_handle_scope [node]
5: 0x7f794ed6f718 [/app/node_modules/.pnpm/pulsar-client@1.16.0/node_modules/pulsar-client/lib/binding/pulsar.node]
6: 0x7f794ed9346b [/app/node_modules/.pnpm/pulsar-client@1.16.0/node_modules/pulsar-client/lib/binding/pulsar.node]
7: 0x7f794ed7b097 [/app/node_modules/.pnpm/pulsar-client@1.16.0/node_modules/pulsar-client/lib/binding/pulsar.node]
8: 0x1061ab3 [node]
9: 0x210d4c3 [node]
10: 0x2123f6a [node]
11: 0x210e187 uv_run [node]
12: 0xf8c055 node::SpinEventLoopInternal(node::Environment*) [node]
13: 0x1119642 node::NodeMainInstance::Run() [node]
14: 0x1058782 node::Start(int, char**) [node]
15: 0x7f79af7fe24a [/lib/x86_64-linux-gnu/libc.so.6]
16: 0x7f79af7fe305 __libc_start_main [/lib/x86_64-linux-gnu/libc.so.6]
17: 0xf8761e _start [node]
```

I defined the listener callback as follows to handle messages asynchronously:
```
await getPulsarConsumer({
listener: async (message, messageConsumer): Promise => {
// do something
},
}
```

Can I know why this error occurred?

Start with the asynchronous listener callback and the native binding referenced in the stack trace, particularly napi_open_escapable_handle_scope. Reproduce the intermittent failure with the shown listener usage and trace the callback into pulsar.node. Done means identifying the locking issue and adding a verified fix or regression coverage.

Written by the indexing model from the issue text.