CAMEL-24057: check actually-used classes in @ConditionalOnClass for access log configurations

[Croway]

Summary

Claude Code on behalf of Federico Mariani

@ConditionalOnClass(name = "io.undertow.Undertow") only checks for the top-level Undertow class, but the access log configurations use internal classes from io.undertow.server.handlers.accesslog.*. On JBoss EAP, the top-level class is visible (JBoss is built on Undertow) but the modular classloader doesn't export all internal packages, causing ClassNotFoundException.

• Updated ManagementAccessLogConfiguration.UndertowAccessLogCustomizerConfiguration to also check for AccessLogHandler and JBossLoggingAccessLogReceiver
• Updated ManagementAccessLogConfiguration.TomcatAccessLogCustomizerConfiguration to also check for AccessLogValve (defensive consistency)
• Updated UndertowAccessLogConfiguration to also check for AccessLogHandler and JBossLoggingAccessLogReceiver

On main, the Undertow code is commented out pending Spring Boot 4.0 spring-boot-starter-undertow, but the annotations are fixed now so the bug won't return when the code is uncommented.

Test plan

• core/camel-spring-boot builds successfully
• camel-platform-http-starter builds successfully
• CI passes