Imports for symbols only in markdown Javadoc are removed

[delanym]

Plugin removes imports referenced only in Javadoc comments when those comments are in Markdown format.

To Reproduce
In your project enable removeUnused and in any class add a Javadoc comment that references a symbol not used in your class, for example an unusual exception type.

When compliance with JDK23 is a possibility javaparser/javaparser#4660 this should be fixed.