Reproducer for #37444

This is a reproducer for an issue with injecting an Optional<List<String>> configuration property in combination with Quarkus' native compilation.

Working flow

1. mvn quarkus:dev
2. curl http://localhost:8080/hello
3. Observe injected: Optional[[a, b]] as logger output (value from application.properties)

Broken flow

1. docker build -t reproducer-37444 .
2. docker run --rm -p 8080:8080 -e STUFF='b,c' reproducer-37444
3. curl http://localhost:8080/hello
4. Observe injected: Optional.empty as logger output
5. Note that printing located: [b, c] proves that the env var is set