Fix unmodifiableList handling of parameterized tests

[joyrex2001]

In java 17 an unmodifiable list of custom objects as part of an Arguments stream used to result in the below error.
This does not occur when the unmodifiable list contains e.g. a list of strings.

[ERROR] Errors: 
[ERROR]   ParamsTest.methodUnmodifiableListArguments(Object)[1] » Conversion No converter available
---- Debugging information ----
message             : No converter available
type                : java.util.Collections$UnmodifiableRandomAccessList
converter           : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
message[1]          : Unable to make field private static final long java.util.Collections$UnmodifiableCollection.serialVersionUID accessible: module java.base does not "opens java.util" to unnamed module @2d58d9ed
-------------------------------

By adding Collections.unmodifiableList to the CustomListConverter this use case is supported as well.

[geoand]

Thanks!

[quarkus-bot]

Failing Jobs - Building d890527

Status	Name	Step	Failures	Logs	Raw logs
✔️	JVM Tests - JDK 11
✖	JVM Tests - JDK 11 Windows	Build	Failures	Logs	Raw logs
✔️	JVM Tests - JDK 17
✖	JVM Tests - JDK 17 MacOS M1	Set up runner	⚠️ Check →	Logs	Raw logs
✔️	JVM Tests - JDK 18

Full information is available in the Build summary check run.

Failures

⚙️ JVM Tests - JDK 11 Windows #

- Failing: extensions/vertx-http/deployment integration-tests/kubernetes/maven-invoker-way integration-tests/opentelemetry-reactive 
! Skipped: extensions/oidc-client-filter/deployment extensions/oidc/deployment extensions/security-webauthn/deployment and 18 more

📦 extensions/vertx-http/deployment

✖ io.quarkus.vertx.http.http2.Http2Test.testHttp2EnabledSsl line 57 - More details - Source on GitHub

java.util.concurrent.ExecutionException: javax.net.ssl.SSLHandshakeException: Failed to create SSL connection
	at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:395)
	at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1999)

📦 integration-tests/kubernetes/maven-invoker-way

✖ Failed to execute goal org.apache.maven.plugins:maven-invoker-plugin:3.2.2:install (integration-tests) on project quarkus-integration-test-kubernetes-invoker: Failed to install project dependencies: MavenProject: io.quarkus:quarkus-integration-test-kubernetes-invoker:999-SNAPSHOT @ D:\a\quarkus\quarkus\integration-tests\kubernetes\maven-invoker-way\pom.xml

📦 integration-tests/opentelemetry-reactive

✖ io.quarkus.it.opentelemetry.reactive.OpenTelemetryReactiveClientTest.post line 94 - More details - Source on GitHub

org.opentest4j.AssertionFailedError: expected: <e5b99f5e65e72acf> but was: <fb7316d58d4c4912>
	at org.junit.jupiter.api.AssertionFailureBuilder.build(AssertionFailureBuilder.java:151)
	at org.junit.jupiter.api.AssertionFailureBuilder.buildAndThrow(AssertionFailureBuilder.java:132)