TextComposer: Fix preview color.

libraries/textcomposer/impl/src/main/kotlin/io/element/android/libraries/textcomposer/TextComposer.kt

@@ -505,11 +505,13 @@ private fun aTextEditorStateMarkdownList() = persistentListOf(
 )
 
 private fun aTextEditorStateRichList() = persistentListOf(
-    aTextEditorStateRich(),
+    aTextEditorStateRich(initialFocus = true),
-    aTextEditorStateRich(initialText = "A message"),
+    aTextEditorStateRich(initialText = "A message", initialFocus = true),
     aTextEditorStateRich(
         initialText = "A message\nWith several lines\nTo preview larger textfields and long lines with overflow",
+        initialFocus = true
     ),
+    aTextEditorStateRich(initialText = "A message without focus", initialFocus = false),
 )
 
 @PreviewsDayNight