Switch to runtime initialization instead of rerun

[zakkak]

They both have the same result starting with 23.1. Runtime
initialization is public API while rerun is not, and will soon be
deprecated and at some point removed in future releases.

See oracle/graal#5013 (comment)
and oracle/graal#8323

Keeping as draft until it's tested with both:

• Mandrel 23.1 for JDK 21: https://github.com/zakkak/quarkus/actions/runs/12789427486

and

• Mandrel 23.0 for JDK 17: https://github.com/graalvm/mandrel/actions/runs/12788108291

Closes #25975

[quarkus-bot]

Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit 68c5071.

✅ 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.

You can consult the Develocity build scans.

---

Flaky tests - Develocity

⚙️ JVM Tests - JDK 17 Windows

📦 integration-tests/opentelemetry-quickstart

✖ io.quarkus.it.opentelemetry.OpenTelemetryDisabledTest.buildTimeDisabled - History

• Condition with Lambda expression in io.quarkus.it.opentelemetry.OpenTelemetryDisabledTest was not fulfilled within 200 milliseconds. - org.awaitility.core.ConditionTimeoutException

org.awaitility.core.ConditionTimeoutException: Condition with Lambda expression in io.quarkus.it.opentelemetry.OpenTelemetryDisabledTest was not fulfilled within 200 milliseconds.
	at org.awaitility.core.ConditionAwaiter.await(ConditionAwaiter.java:167)
	at org.awaitility.core.CallableCondition.await(CallableCondition.java:78)
	at org.awaitility.core.CallableCondition.await(CallableCondition.java:26)
	at org.awaitility.core.ConditionFactory.until(ConditionFactory.java:1006)
	at org.awaitility.core.ConditionFactory.until(ConditionFactory.java:975)
	at io.quarkus.it.opentelemetry.OpenTelemetryDisabledTest.buildTimeDisabled(OpenTelemetryDisabledTest.java:29)
	at java.base/java.lang.reflect.Method.invoke(Method.java:569)