@ConfigMapping with Optional values does not load values when inheriting interface

[fire2]

Describe the bug

1. Consider a configuration interface annotated with @ConfigMapping that inherits from another interface, such as https://github.com/fire2/quarkus-bug-configmapping/blob/main/src/main/java/org/config/Configuration.java. Define the config properties as Optional: https://github.com/fire2/quarkus-bug-configmapping/blob/main/src/main/java/org/config/MarketConfig.java
2. Provide proper values for the config in application.yaml: https://github.com/fire2/quarkus-bug-configmapping/blob/main/src/main/resources/application.yaml

The config values do not load, all the Optionals are empty, although there are valid values in application.yaml.

Expected behavior

The config values are loaded correctly and the optionals are not empty. This works fine when they are defined directly in the annotated interface. It also worked fine in Quarkus 2.15.3.Final.

Actual behavior

Optionals are empty.

How to Reproduce?

1. Clone https://github.com/fire2/quarkus-bug-configmapping/tree/main
2. Run https://github.com/fire2/quarkus-bug-configmapping/blob/main/src/test/java/org/config/ConfigurationTest.java

Output of uname -a or ver

Darwin LMUCM902989 23.1.0 Darwin Kernel Version 23.1.0: Mon Oct 9 21:27:27 PDT 2023; root:xnu-10002.41.9~6/RELEASE_X86_64 x86_64 i386 Darwin

Output of java -version

openjdk 17.0.7 2023-04-18 LTS OpenJDK Runtime Environment Zulu17.42+19-CA (build 17.0.7+7-LTS) OpenJDK 64-Bit Server VM Zulu17.42+19-CA (build 17.0.7+7-LTS, mixed mode, sharing)

Quarkus version or git rev

3.6.0

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

mvn

Additional information

No response