Microprofile rest client - Can't inject config/beans to providers

[snowdrop-bot]

Describe the bug
Any provider added to rest client via @Provider annotation is unable to inject config bean or any other application scoped bean.

@RegisterRestClient
@RegisterProvider(RequestFilter.class)
public interface EchoService {....}

And example the provider impl:

public class RequestFilter implements ClientRequestFilter {
  @Inject
  AppConfig config;  //is always null

  @Inject
  SomeBean bean; //is always null

  @Override
  public void filter(ClientRequestContext requestContext) throws IOException {...}

Expected behavior
Config or application scope bean injected and not null

Actual behavior
Any bean injected via @Inject is alway null (no errors in logs during argumentation nor during runtime.

To Reproduce
Steps to reproduce the behavior:

1. Use reproducer: https://github.com/marcinczeczko/quarkus-rest-providers-reproducer
2. mvn compile quarkus:dev
3. curl http://localhost:8080/echo
4. Check the logs - the injected config & app bean shows null reference

Configuration

• See reproducer

Screenshots
N/A

Environment (please complete the following information):

• Output of uname -a or ver: 18.7.0 Darwin Kernel Version 18.7.0: Sat Oct 12 00:02:19 PDT 2019; root:xnu-4903.278.12~1/RELEASE_X86_64 x86_64
• Output of java -version:

java version "1.8.0_192"
Java(TM) SE Runtime Environment (build 1.8.0_192-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.192-b12, mixed mode)

• GraalVM version (if different from Java): Didn't check on graalvm
• Quarkus version or git rev: 1.0.0.Final

Additional context

I found out there is a closed issue for similar problem, but looks like the fix doesn't work, see: quarkusio#2773

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