Don't assume module that has child modules is the parent of those modules

[aloubyansky]

Fixes a regression in workspace loading in 3.7.0

[quarkus-bot]

Failing Jobs - Building 09c312d

Status	Name	Step	Failures	Logs	Raw logs	Build scan
✔️	JVM Tests - JDK 17					🔍
✖	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: integration-tests/virtual-threads/grpc-virtual-threads 

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

✖ io.quarkus.grpc.example.streaming.VertxVirtualThreadTest.testUnary - More details - Source on GitHub

io.grpc.StatusRuntimeException: INTERNAL: Half-closed without a request
	at io.grpc.stub.ClientCalls.toStatusRuntimeException(ClientCalls.java:268)
	at io.grpc.stub.ClientCalls.getUnchecked(ClientCalls.java:249)
	at io.grpc.stub.ClientCalls.blockingUnaryCall(ClientCalls.java:167)
	at io.grpc.testing.integration.TestServiceGrpc$TestServiceBlockingStub.unaryCall(TestServiceGrpc.java:220)
	at io.quarkus.grpc.example.streaming.VirtualThreadTestBase.testUnary(VirtualThreadTestBase.java:33)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at io.quarkus.test.junit.QuarkusTestExtension.runExtensionMethod(QuarkusTestExtension.java:1018)