Refactor: Move kafka client substitutions under tight package #665

Job	Run time
Attach pull request number	0s
Initial JDK 17 Build	13m 2s
CI Sanity Check	31s
Calculate Test Jobs	9s
Maven Tests - JDK 17	7m 32s
Maven Tests - JDK 17 Windows	12m 20s
Kubernetes Tests - JDK 17	12m 39s
Gradle Tests - JDK ${{ matrix.java.name }}	0s
Kubernetes Tests - JDK 21	12m 8s
JVM Tests - JDK 17	13m 57s
Kubernetes Tests - JDK 17 Windows	17m 15s
JVM Tests - JDK 21	14m 33s
JVM Tests - JDK 17 Windows	10m 1s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
Native Tests - Messaging1	33m 36s
Native Tests - HTTP	6m 55s
Quickstarts Compilation - JDK 17	6m 1s
MicroProfile TCKs Tests	0s
Native Tests - Virtual Thread - Messaging	4m 8s
Build report	40s
	2h 45m 27s

Provide feedback