Make registration of OAuthBearerValidatorCallbackHandler conditional #37918

Job	Run time
CI Sanity Check	32s
Attach pull request number	2s
Initial JDK 17 Build	12m 47s
Calculate Test Jobs	10s
Maven Tests - JDK 17	8m 12s
Maven Tests - JDK 17 Windows	11m 31s
JVM Tests - JDK 17	11m 5s
JVM Tests - JDK 21	13m 0s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
JVM Tests - JDK 17 Windows	7m 8s
Gradle Tests - JDK ${{ matrix.java.name }}	0s
Kubernetes Tests - JDK 17	4m 2s
Native Tests - Messaging1	30m 14s
Kubernetes Tests - JDK 21	4m 12s
Kubernetes Tests - JDK 17 Windows	2m 14s
Quickstarts Compilation - JDK 17	6m 8s
Native Tests - HTTP	6m 22s
MicroProfile TCKs Tests	0s
Native Tests - Virtual Thread - Messaging	3m 59s
Build report	14s
	2h 1m 52s

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