Mutiny subscription is not cancelled when grpc client is cancelled

[akastyka]

Describe the bug

Having a grpc service which returns Multi and grpc client which is cancelled after some time, grpc service continue to produce items (looks similar to #13988)

    public Multi<GreetingResponse> greeting(Empty request) {
        return Multi.createFrom().ticks().every(
                Duration.ofSeconds(2)).invoke(x -> {
            System.out.println(Thread.currentThread().getName() + "-" + Instant.now().getEpochSecond());
        })
                .onItem().transform(x -> GreetingResponse.newBuilder().setId(x).build());
    }

Expected behavior

Grpc service is cancelled

Actual behavior

Grpc service continue to produce messages

How to Reproduce?

No response

Output of uname -a or ver

22.04.2-Ubuntu

Output of java -version

Temurin-21.0.2+13

Quarkus version or git rev

3.11.0

Build tool (ie. output of mvnw --version or gradlew --version)

Gradle 8.6

Additional information

No response

[quarkus-bot]

/cc @alesj (grpc), @cescoffier (grpc,mutiny), @jponge (mutiny)

[akastyka]

Is there any plans to fix it ?

[cescoffier]

Yes, but cannot tell you want I (or someone else) will have the time to look into it.