RESTEasy Reactive: ClientBuilder and Client should not share the same Configuration instance #45555
Description
Describe the bug
When creating a Client from a ClientBuilder, the Configuration is passed to the resulting Client instead of copied, so all properties and providers registered on the client are visible to the builder and all other clients build from it.
For comparison, when going from a Client to a WebTarget, the Configuration is copied.
Expected behavior
Each Client should receive a copy of the Configuration of the ClientBuilder.
Actual behavior
The Client and ClientBuilder share the same Configuration instance.
How to Reproduce?
Reproducer: https://github.com/Sola-ris/quarkus-configuration-reporducer
Run via ./mvnw verify
Output of uname -a or ver
Linux xxx 5.15.167.4-microsoft-standard-WSL2 #1 SMP Tue Nov 5 00:21:55 UTC 2024 x86_64 GNU/Linux
Output of java -version
openjdk version "21.0.5" 2024-10-15 LTS OpenJDK Runtime Environment Temurin-21.0.5+11 (build 21.0.5+11-LTS) OpenJDK 64-Bit Server VM Temurin-21.0.5+11 (build 21.0.5+11-LTS, mixed mode, sharing)
Quarkus version or git rev
3.17.6
Build tool (ie. output of mvnw --version or gradlew --version)
Apache Maven 3.9.9 (8e8579a9e76f7d015ee5ec7bfcdc97d260186937)
Additional information
When replacing the reproducer's dependencies with their RESTEasy Classic versions, the test passes.