Fix webtoon page takes up entire screen even if it's smaller (#5622)

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonPageHolder.kt

@@ -266,6 +266,7 @@ class WebtoonPageHolder(
      */
     private fun setImage() {
         progressIndicator.setCompleteProgressAndHide()
+        progressContainer.isVisible = false
         retryContainer?.isVisible = false
         removeDecodeErrorLayout()