Default annotation values are not retained in the metadata

[alvarosanchez]

Given an annotation like:

public @interface CacheInvalidate {
    boolean all() default false;
}

Used without values, like @CacheInvalidate.

When calling AnnotationMetadata::getRequiredValue with "all" and Boolean.class, it throws an exception because there are no default values in the annotation metadata.

[graemerocher]

The previous code ended up using reflection hence why it was removed since the approach wouldn't work on GraalVM. I have updated the cache plugin code to note use this method anymore.