Remove ` java.beans.Introspector` dependency from JAXB module (to get rid of `java.desktop` module dep)

[cowtowncoder]

JaxbAnnotationIntrospector class of JAXB annotations module makes a tiny use of java.beans.Introspector. While it is fine with Java 8 and earlier, being part of JDK, it adds an unfortunate Module dependency to "java.desktop" on Java 11 and later. So let's get rid of it, if possible.

[cowtowncoder]

@GedMarc @XakepSDK removed java.desktop module dependency from JAXB annotations module.