Fixes missing empty paragraphs

commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/richtext/RichTextParser.kt

@@ -176,6 +176,10 @@ class RichTextParser {
             val isRTL = isArabic(paragraph)
 
             val wordList = paragraph.trimEnd().split(wordBoundaryRegex).filter { it.isNotEmpty() }
+
+            if (wordList.isEmpty()) {
+                paragraphSegments.add(ParagraphState(persistentListOf(RegularTextSegment("")), isRTL))
+            } else {
                 val segments = ArrayList<Segment>(wordList.size)
                 wordList.forEach { word ->
                     segments.add(wordIdentifier(word, images, videos, urls, emojis, tags))
@@ -183,6 +187,7 @@ class RichTextParser {
 
                 paragraphSegments.add(ParagraphState(segments.toPersistentList(), isRTL))
             }
+        }
 
         val segmentsWithGalleries = GalleryParser().processParagraphs(paragraphSegments)