Prefer single char String intrinsics over String one

[franz1981]

No description provided.

[geoand]

Although this makes sense, this handler is rarely used

[franz1981]

Agree, it is a minor I have found by reading few flamegraphs these days, but it can be ignored if we don't care really...
Although I would like to understand why I have found it, given it should be rarely used

[geoand]

We can certainly include it, there is absolutely no harm done!

And actually I was wrong before... The handler is always called, it's just that if statement is rarely true (as HTTP Matrix params are rarely used).

[quarkus-bot]

Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit e615c43.

✅ The latest workflow run for the pull request has completed successfully.

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

---

Flaky tests - Develocity

⚙️ JVM Tests - JDK 21

📦 extensions/smallrye-reactive-messaging-kafka/deployment

✖ io.quarkus.smallrye.reactivemessaging.kafka.deployment.dev.KafkaDevServicesDevModeTestCase.sseStream - History

• Assertion condition defined as a Lambda expression in io.quarkus.smallrye.reactivemessaging.kafka.deployment.dev.KafkaDevServicesDevModeTestCase Expecting size of: [] to be greater than or equal to 2 but was 0 within 10 seconds. - org.awaitility.core.ConditionTimeoutException

org.awaitility.core.ConditionTimeoutException: 
Assertion condition defined as a Lambda expression in io.quarkus.smallrye.reactivemessaging.kafka.deployment.dev.KafkaDevServicesDevModeTestCase 
Expecting size of:
  []
to be greater than or equal to 2 but was 0 within 10 seconds.
	at org.awaitility.core.ConditionAwaiter.await(ConditionAwaiter.java:167)
	at org.awaitility.core.AssertionCondition.await(AssertionCondition.java:119)
	at org.awaitility.core.AssertionCondition.await(AssertionCondition.java:31)