'end' event not being sent for server-side streaming call

When performing a client call to a server-side streaming service, I never receive the 'end' event. The server implementation is in kotlin. Im using protoc-gen-grpc-web 1.4.2

This is my client code.
```
const stream = getDataClient().generateBulkStatistics(request, metadata);
stream
.on('data', (response: ExampleResponse) => {
console.log('Received data');
})
.on('error', (error: RpcError) => {
console.log('Received error');
})
.on('end', () => {
console.log('Received end');
});
```

This is my protoc config

```
protoc \
--js_out=import_style=commonjs,binary:$OUTPUT_FOLDER \
--grpc-web_out=import_style=typescript,mode=grpcwebtext:$OUTPUT_FOLDER \
```

Start by reproducing the server-side streaming call through generateBulkStatistics using protoc-gen-grpc-web 1.4.2 and the shown protoc configuration. Trace the stream's data, error, and end event handling and compare behavior when the server completes; done means identifying why end is not delivered and confirming the corrected completion behavior.

Written by the indexing model from the issue text.