refactor: Optimize all images no matter which size

lib/utils/resize_image.dart

@@ -32,18 +32,16 @@ Future<BlurHash> createBlurHash(Uint8List file) async {
 }
 
 Future<Uint8List> resizeBytes(Uint8List file) async {
-  final image = decodeImage(file)!;
+  var image = decodeImage(file)!;
 
   // Is file already smaller than max? Then just return.
-  if (math.max(image.width, image.height) <= ResizeImage.max) {
-    return file;
-  }
-
+  if (math.max(image.width, image.height) > ResizeImage.max) {
     // Use the larger side to resize.
     final useWidth = image.width >= image.height;
-  final thumbnail = useWidth
+    image = useWidth
         ? copyResize(image, width: ResizeImage.max)
         : copyResize(image, height: ResizeImage.max);
+  }
 
-  return Uint8List.fromList(encodeJpg(thumbnail, quality: ResizeImage.quality));
+  return Uint8List.fromList(encodeJpg(image, quality: ResizeImage.quality));
 }