Reproducer for 7462

I actually can't reproduce. I built quarkus master

cd quarkus
./mvnw clean install -DskipTests

Then on this project

cd banner-test
./mvnw quarkus:dev

Then hit the following URL

http://localhost:8080/greeting/init for the initial object creation

http://localhost:8080/greeting/second for the read only showing no version increment

http://localhost:8080/greeting/third showing how the version increment upon changes