HHH-19301 Fully qualified name import should be used instead of simple name when generation 'implements' for Jakarda Data metamodel class

Author: cigaly

tooling/metamodel-generator/src/main/java/org/hibernate/processor/ClassWriter.java

@@ -238,7 +238,7 @@ else if ( modifiers.contains( Modifier.PROTECTED ) ) {
 		}
 		if ( entity.isImplementation() ) {
 			pw.print( entity.getElement().getKind() == ElementKind.CLASS ? " extends " : " implements " );
-			pw.print( entity.getSimpleName() );
+			pw.print( entity.importType( (entity.getQualifiedName()) ) );
 		}
 
 		pw.println( " {" );