Incorrect reflection-config.json for shaded-asynchttpclient?

I'm using sbt-native-packager to build a graalvm-native image

https://www.scala-sbt.org/sbt-native-packager/formats/graalvm-native-image.html

Play WS Version (2.5.x / etc)

2.1.3

API (Scala / Java / Neither / Both)

Scala

Operating System (Ubuntu 15.10 / MacOS 10.10 / Windows 10)

MacOS 11.4

JDK (Oracle 1.8.0_72, OpenJDK 1.8.x, Azul Zing)

openjdk 16.0.1 2021-04-20
OpenJDK Runtime Environment GraalVM CE 21.1.0 (build 16.0.1+9-jvmci-21.1-b05)
OpenJDK 64-Bit Server VM GraalVM CE 21.1.0 (build 16.0.1+9-jvmci-21.1-b05, mixed mode, sharing)

Expected Behavior

Native image compilation works as expected

Actual Behavior

> show graalvm-native-image:packageBin
...
[error] Error: Error parsing reflection configuration in jar:file:/Users/xxx/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/com/typesafe/play/shaded-asynchttpclient/2.1.3/shaded-asynchttpclient-2.1.3.jar!/META-INF/native-image/io.netty/transport/reflection-config.json:
[error] Could not resolve io.netty.channel.socket.nio.NioServerSocketChannel for reflection configuration. Reason: java.lang.ClassNotFoundException: io.netty.channel.socket.nio.NioServerSocketChannel. To allow unresolvable reflection configuration, use option -H:+AllowIncompleteClasspath

Reproduce the failure with graalvm-native-image:packageBin and inspect META-INF/native-image/io.netty/transport/reflection-config.json inside the shaded-asynchttpclient 2.1.3 jar. Check why the configuration references io.netty.channel.socket.nio.NioServerSocketChannel when compiling the native image; done means native image compilation completes without this reflection-configuration error.