Dispatch Vert.x event bus consumer events in correct context

[ozangunalp]

Fixes #38061

Event bus consumer handlers are called on duplicated contexts created from the context that registered the consumer.
When dispatching over blocking or VT threads we do not need to re-create a duplicated context.
(Hence there is no need to jump on the context.runOnContext to dispatch on VT executor.)

[brunobat]

The solution looks really elegant.
Thanks @ozangunalp

[quarkus-bot]

Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit 1ea7599.

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It should be safe to merge provided you have a look at the other checks in the summary.

You can consult the Develocity build scans.

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Flaky tests - Develocity

⚙️ Native Tests - HTTP

📦 integration-tests/rest-client-reactive

✖ io.quarkus.it.rest.client.BasicTestIT.shouldCreateClientSpans - History

• expected: <1> but was: <2> - org.opentest4j.AssertionFailedError

org.opentest4j.AssertionFailedError: expected: <1> but was: <2>
	at io.quarkus.it.rest.client.BasicTest.shouldCreateClientSpans(BasicTest.java:216)
	at java.base/java.lang.reflect.Method.invoke(Method.java:569)
	at io.quarkus.test.junit.QuarkusTestExtension.interceptTestMethod(QuarkusTestExtension.java:789)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)