Revert the temp changes to use aspect fill of demo

Author: dreampiggy

Example/SDWebImageSwiftUIDemo/ContentView.swift

@@ -96,12 +96,12 @@ struct ContentView: View {
                             */
                             .transition(.fade)
                             .resizable()
-                            .scaledToFill()
+                            .scaledToFit()
                             .frame(width: CGFloat(100), height: CGFloat(100), alignment: .center)
                             #else
                             AnimatedImage(url: URL(string:url))
                             .resizable()
-                            .scaledToFill()
+                            .scaledToFit()
                             .frame(width: CGFloat(100), height: CGFloat(100), alignment: .center)
                             #endif
                         } else {