QuarkusComponentTest: fix NPE if component is expected but none exists #41776

Job	Run time
Attach pull request number	4s
CI Sanity Check	31s
Initial JDK 17 Build	10m 24s
Calculate Test Jobs	9s
Maven Tests - JDK 17	7m 39s
Gradle Tests - JDK 17	29m 36s
JVM Tests - JDK 17	6m 19s
Gradle Tests - JDK 17 Windows	46m 48s
JVM Tests - JDK 21	6m 48s
Maven Tests - JDK 17 Windows	11m 32s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
Kubernetes Tests - JDK ${{ matrix.java.name }}	0s
JVM Tests - JDK 17 Windows	8m 19s
Quickstarts Compilation - JDK 17	5m 24s
Native Tests - Main	7m 6s
MicroProfile TCKs Tests	0s
Native Tests - Misc4	19m 32s
Native Tests - Virtual Thread - ${{ matrix.category }}	0s
Upload build stats to collector	0s
Build report	28s
	2h 40m 39s

Provide feedback