Widget: avoid empty user display name

CHANGES.md

@@ -8,7 +8,7 @@ Improvements 🙌:
  -
 
 Bugfix 🐛:
- -
+ - Bug in WidgetContent.computeURL() (#2767)
 
 Translations 🗣:
  -

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/widgets/helper/WidgetFactory.kt

@@ -70,7 +70,7 @@ internal class WidgetFactory @Inject constructor(private val userDataSource: Use
         val myUser = userDataSource.getUser(userId)
         computedUrl = computedUrl
                 .replace("\$matrix_user_id", userId)
-                .replace("\$matrix_display_name", myUser?.displayName ?: userId)
+                .replace("\$matrix_display_name", myUser?.getBestName() ?: userId)
                 .replace("\$matrix_avatar_url", myUser?.avatarUrl ?: "")
                 .replace("\$matrix_widget_id", widgetId)