[web] fix CanvasKit benchmarks (was corrupted test PNG) (#100918)

Author: yjbanov

dev/benchmarks/macrobenchmarks/lib/src/web/bench_build_image.dart

@@ -12,9 +12,14 @@ import 'recorder.dart';
 const List<int> kTransparentImage = <int>[
   0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, 0x00, 0x00, 0x00, 0x0D, 0x49,
   0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x08, 0x06,
-  0x00, 0x00, 0x00, 0x1F, 0x15, 0xC4, 0x89, 0x00, 0x00, 0x00, 0x0A, 0x49, 0x44,
-  0x41, 0x54, 0x78, 0x9C, 0x63, 0x00, 0x01, 0x00, 0x00, 0x05, 0x00, 0x01, 0x0D,
-  0x0A, 0x2D, 0xB4, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4E, 0x44, 0xAE,
+  0x00, 0x00, 0x00, 0x1F, 0x15, 0xC4, 0x89, 0x00, 0x00, 0x00, 0x06, 0x62, 0x4B,
+  0x47, 0x44, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0xA0, 0xBD, 0xA7, 0x93, 0x00,
+  0x00, 0x00, 0x09, 0x70, 0x48, 0x59, 0x73, 0x00, 0x00, 0x0B, 0x13, 0x00, 0x00,
+  0x0B, 0x13, 0x01, 0x00, 0x9A, 0x9C, 0x18, 0x00, 0x00, 0x00, 0x07, 0x74, 0x49,
+  0x4D, 0x45, 0x07, 0xE6, 0x03, 0x10, 0x17, 0x07, 0x1D, 0x2E, 0x5E, 0x30, 0x9B,
+  0x00, 0x00, 0x00, 0x0B, 0x49, 0x44, 0x41, 0x54, 0x08, 0xD7, 0x63, 0x60, 0x00,
+  0x02, 0x00, 0x00, 0x05, 0x00, 0x01, 0xE2, 0x26, 0x05, 0x9B, 0x00, 0x00, 0x00,
+  0x00, 0x49, 0x45, 0x4E, 0x44, 0xAE, 0x42, 0x60, 0x82,
 ];
 
 /// An animated GIF image with 3 1x1 pixel frames (a red, green, and blue