https://github.com/quarkusio/quarkus/pull/24026 apparently resulted in `quarkus:generate-code` invoked from the `DevMojo` to close the bootstrapped app because the Maven session listener isn't initialized from the invoker, making the `DevMojo` to bootstrap it again.
This PR introduces a parameter that allows `DevMojo` to instruct `quarkus:generate-code` to keep the bootstrapped app open.