[#1979] Fix find with EmbeddedId

When using the find with multiple embedded ids, only the first result
was returned.

Author: DavideD

hibernate-reactive-core/src/main/java/org/hibernate/reactive/sql/results/graph/embeddable/internal/ReactiveEmbeddableInitializerImpl.java

@@ -84,6 +84,15 @@ public CompletionStage<Void> forEachReactiveSubInitializer(
 		}
 	}
 
+	@Override
+	public void resolveInstance(EmbeddableInitializerData data) {
+		// We need to clean up the instance, otherwise the .find with multiple id is not going to work correctly.
+		// It will only return the first element of the list. See EmbeddedIdTest#testFindMultipleIds.
+		// ORM doesn't have this issue because they don't have a find with multiple ids.
+		data.setInstance( null );
+		super.resolveInstance( data );
+	}
+
 	@Override
 	public Object getResolvedInstance(EmbeddableInitializerData data) {
 		return super.getResolvedInstance( data );