Remove default parameter values.

This improve code coverage since some default value was never used.

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/attachments/preview/AttachmentsPreviewPresenter.kt

@@ -235,6 +235,7 @@ class AttachmentsPreviewPresenter @AssistedInject constructor(
         mediaSender.sendPreProcessedMedia(
             mediaUploadInfo = mediaUploadInfo,
             caption = caption,
+            formattedCaption = null,
             progressCallback = progressCallback
         ).getOrThrow()
     }.fold(

libraries/mediaupload/api/src/main/kotlin/io/element/android/libraries/mediaupload/api/MediaSender.kt

@@ -43,9 +43,9 @@ class MediaSender @Inject constructor(
 
     suspend fun sendPreProcessedMedia(
         mediaUploadInfo: MediaUploadInfo,
-        caption: String? = null,
-        formattedCaption: String? = null,
-        progressCallback: ProgressCallback? = null
+        caption: String?,
+        formattedCaption: String?,
+        progressCallback: ProgressCallback?,
     ): Result<Unit> {
         return room.sendMedia(
             uploadInfo = mediaUploadInfo,