QuarkusUnitTest: fix NPE when an exception is expected

[mkouba]

...and the test declares BeforeEach, BeforeAll and RepeatedTest

• fixes QuarkusUnitTest#interceptBeforeEachMethod() throws NPE if a test expects an exception and declares BeforeEach #48600

[quarkus-bot]

Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit 203750a.

Failing Jobs

Status	Name	Step	Failures	Logs	Raw logs	Build scan
✔️	JVM Tests - JDK 17			Logs	Raw logs	🚧
✖	JVM Tests - JDK 21	Build	Failures	Logs	Raw logs	🔍

Full information is available in the Build summary check run.
You can consult the Develocity build scans.

Failures

⚙️ JVM Tests - JDK 21 #

- Failing: extensions/smallrye-openapi/deployment 
! Skipped: extensions/agroal/deployment extensions/elytron-security-jdbc/deployment extensions/flyway/deployment and 46 more

📦 extensions/smallrye-openapi/deployment

✖ io.quarkus.smallrye.openapi.test.vertx.OpenApiDefaultPathTestCase. - History - More details - Source on GitHub

java.lang.ExceptionInInitializerError
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:534)
	at java.base/java.lang.Class.forName(Class.java:513)
	at io.quarkus.runner.bootstrap.StartupActionImpl.run(StartupActionImpl.java:313)
	at io.quarkus.test.QuarkusUnitTest.beforeAll(QuarkusUnitTest.java:710)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
Caused by: java.lang.RuntimeException: Failed to start quarkus

✖ io.quarkus.smallrye.openapi.test.vertx.SwaggerAndOpenAPIWithCommonPrefixTest.shouldWorkEvenWithCommonPrefix line 26 - History - More details - Source on GitHub

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

	at java.base/jdk.internal.reflect.DirectConstructorHandleAccessor.newInstance(DirectConstructorHandleAccessor.java:62)
	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)

[geoand]

The CI failure is unrelated to this PR and has (hopefully) been fixed in main