Quarkus 3.4.x - Build failure: java.lang.Object is used as an embeddable but does not have an @Embeddable annotation

[jimbogithub]

I'm seeing this new build error with Quarkus 3.4.2 (was fine for 3.3.3 and prior):

java.lang.RuntimeException: io.quarkus.builder.BuildException: Build failure: Build failed due to errors
	[error]: Build step io.quarkus.hibernate.orm.deployment.HibernateOrmProcessor#defineJpaEntities threw an exception: java.lang.IllegalStateException: io.quarkus.builder.BuildException: Build failure: java.lang.Object is used as an embeddable but does not have an @Embeddable annotation.
	at io.quarkus.deployment.ExtensionLoader$3.execute(ExtensionLoader.java:867)
	at io.quarkus.builder.BuildContext.run(BuildContext.java:282)
	at org.jboss.threads.ContextHandler$1.runWith(ContextHandler.java:18)
	at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2513)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1538)
	at java.base/java.lang.Thread.run(Thread.java:833)
	at org.jboss.threads.JBossThread.run(JBossThread.java:501)
Caused by: io.quarkus.builder.BuildException: Build failure: java.lang.Object is used as an embeddable but does not have an @Embeddable annotation.
	at io.quarkus.hibernate.orm.deployment.JpaJandexScavenger.collectEmbeddedType(JpaJandexScavenger.java:513)
	at io.quarkus.hibernate.orm.deployment.JpaJandexScavenger.enlistEmbeddedsAndElementCollections(JpaJandexScavenger.java:323)
	at io.quarkus.hibernate.orm.deployment.JpaJandexScavenger.discoverModelAndRegisterForReflection(JpaJandexScavenger.java:95)
	at io.quarkus.hibernate.orm.deployment.HibernateOrmProcessor.defineJpaEntities(HibernateOrmProcessor.java:409)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at io.quarkus.deployment.ExtensionLoader$3.execute(ExtensionLoader.java:858)

I can't find any explicit use of Object as an embedded type in our JPA models.
Is it possible that #35598 / #35822 has caused this?