Dispose of the FacadeClassLoader at the end of every test plan so surefire reruns are tolerated

[holly-cummins]

Fixes #51269.

The current problem in CI (and for users) was caused by #50092, which bumped surefire from 3.5.3 to 3.5.4. We didn't catch it because (a) the tests for maven reruns wasn't merged and (b) they didn't lock the version of surefire to the one used by the rest of the build, so they wouldn't have caught the regression. I've confirmed that when I do add the version, the tests start failing, and this PR gets them passing again.

The root cause was that apache/maven-surefire#863 changed how surefire handled LauncherSessions so that one session was created for the whole process, rather than one for each test run. That meant that on runs after the first one, the rerun tests would still be loaded with the 'old' classloader and attached to the previous app. I worried this would be hard to fix the hooking the end of the test execution allows us to close everything at the right point.

[gsmet]

I force pushed a reformat so that CI can run tonight.

[quarkus-bot]

Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit 6bf4f0a.

✅ 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.

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Flaky tests - Develocity

⚙️ JVM Integration Tests - JDK 21 Semeru

📦 integration-tests/virtual-threads/grpc-virtual-threads

❌ io.quarkus.grpc.example.streaming.VirtualThreadTest.testGrpcClient - History

• 1 expectation failed. Expected status code <200> but was <500>. - java.lang.AssertionError

Details

java.lang.AssertionError: 
1 expectation failed.
Expected status code <200> but was <500>.

	at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:502)
	at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486)
	at org.codehaus.groovy.reflection.CachedConstructor.invoke(CachedConstructor.java:73)
	at org.codehaus.groovy.runtime.callsite.ConstructorSite$ConstructorSiteNoUnwrapNoCoerce.callConstructor(ConstructorSite.java:108)