Remove the reference to ManagedBean

[Emily-Jiang]

Since the annotation @ManagedBean was deleted from Jakarta Annotation (see here), this spec needs to remove the reference to @ManagedBean. I did a quick search and found the annotation was referenced by a few javadocs and the spec.

ProcessInjectionPoint.java:

/**
 * <p>
 * The container fires an event of this type for every injection point of every Java EE component class supporting injection
 * that may be instantiated by the container at runtime, including every managed bean declared using
 * {@code jakarta.annotation.ManagedBean}, EJB session or message-driven bean, enabled bean, enabled interceptor or enabled
 * decorator.
 * </p>
 *