Fix displaying of empty form fields

DEVSIX-1491

Author: IdamkinI

src/main/java/com/itextpdf/html2pdf/attach/impl/layout/form/renderer/AbstractTextFieldRenderer.java

@@ -86,8 +86,7 @@ public abstract class AbstractTextFieldRenderer extends AbstractFormFieldRendere
      */
     IRenderer createParagraphRenderer(String defaultValue) {
         if (defaultValue.trim().isEmpty()) {
-            // TODO DEVSIX-1491: change to 'defaultValue = "\u00A0"' after trimming of non-breakable spaces is fixed;
-            defaultValue = "\u00B7";
+            defaultValue = "\u00A0";
         }
         Paragraph paragraph = new Paragraph(defaultValue).setMargin(0);
         Leading leading = this.<Leading>getProperty(Property.LEADING);