[bugfix] Add missing support for Comment, Processing Instruction, and CData node types in the XQJ deserializer

Author: adamretter

exist-core/src/main/java/org/exist/xqj/Marshaller.java

@@ -493,6 +493,18 @@ public static Item streamToDOM(int rootType, XMLStreamReader parser, final Expre
                 case XMLStreamConstants.CHARACTERS :
                     builder.characters(parser.getText());
                     break;
+
+                case XMLStreamConstants.COMMENT:
+                    builder.comment(parser.getText());
+                    break;
+
+                case XMLStreamConstants.PROCESSING_INSTRUCTION:
+                    builder.processingInstruction(parser.getPITarget(), parser.getPIData());
+                    break;
+
+                case XMLStreamConstants.CDATA:
+                    builder.cdataSection(parser.getText());
+                    break;
             }
             if (finish) {break;}
         }