chore(spawn-local-jdk): replace auto-service with native JPMS service registration

[deer]

• Removes the com.google.auto.service dependency and @AutoService(JDKDetector.class) annotation from JDKHomeBasedPatternDetector — the module-info.java provides declaration already handles service registration on the module path, making it redundant
• Removes false from the surefire config so tests now run correctly on the module path instead of bypassing JPMS
• Cleans up auto-service.version property from the root pom.xml