Add a named javadoc union for JavaFX

So that /JavaFX{N}/ links on javadoc.scijava.org, and javadoc -link
targets, can reach the JavaFX that pom-scijava manages.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: ctrueden

pombast.toml

@@ -78,6 +78,7 @@ redirect-format = "rewritemap"
 "net.imagej" = ["net.imagej:*"]
 "net.imglib2" = ["net.imglib2:*"]
 "org.bonej" = ["org.bonej:*"]
+"org.openjfx" = ["org.openjfx:*"]
 "org.scijava" = ["org.scijava:*"]
 "sc.fiji" = ["sc.fiji:*"]