Spring Boot properties fail to find a property in native since 3.18.2 after SmallRye Config bump to 3.11.2

[michalvavrik]

Describe the bug

I have a Quarkus application where I use Spring Boot properties. It works in JVM just fine, but after #46032 I can see that native fails to start. I have verified that with SmallRye Config 3.11.1, things work as expected.

Expected behavior

Application starts in native.

Actual behavior

Application fails to start with Failed to load config value of type java.util.List<java.lang.String> for: lists.strings.

How to Reproduce?

Steps to reproduce the behavior:

quarkus create app -x=spring-boot-properties,spring-web,rest-jackson
cd code-with-quarkus/
cat << 'EOF' > ./src/main/java/Props.java
import java.util.List;

import org.springframework.boot.context.properties.ConfigurationProperties;

@ConfigurationProperties("lists")
public class Props {
    public List<String> strings;
}
EOF
cat << 'EOF' > ./src/main/java/Controller.java
import jakarta.inject.Inject;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/collections")
public class Controller {

    @Inject // Using `@Inject` instead of `@Autowired` to verify we can use both.
    Props listProperties;

    @GetMapping("/list/strings")
    public String listOfStrings() {
        return String.join(", ", listProperties.strings);
    }
}
EOF
echo "lists.strings[0]=Value 1" > src/main/resources/application.properties

# success
mvn clean package
java -jar target/quarkus-app/quarkus-run.jar
curl -v http://localhost:8080/collections/list/strings

# failure
mvn clean verify -Dnative

Output of uname -a or ver

Fedora

Output of java -version

Temurin 21

Quarkus version or git rev

3.18.2 +

Build tool (ie. output of mvnw --version or gradlew --version)

mvn 3.9.9

Additional information

No response

[quarkus-bot]

/cc @Ladicek (smallrye), @aureamunoz (spring), @geoand (spring), @jmartisk (smallrye), @phillip-kruger (smallrye), @radcortez (config,smallrye)

[radcortez]

I'll have a look.