Fix MangaController's loading view initial position (#5827)

Make sure the loading view is hidden before updating the offset.

(cherry picked from commit 18b5250ed1067423f2c4bb0955f14350697afc5b)

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt

@@ -356,7 +356,9 @@ class MangaController :
                     val topStatusBarInset = WindowInsetsCompat.toWindowInsetsCompat(windowInsets)
                         .getInsets(WindowInsetsCompat.Type.statusBars())
                         .top
+                    swipeRefresh.isRefreshing = false
                     swipeRefresh.setProgressViewEndTarget(false, getMainAppBarHeight() + topStatusBarInset)
+                    updateRefreshing()
                     windowInsets
                 }
             }