message: Restore accidental removal of Adreno workaround.
diff: #define DITHERING_TRIANGLE_NOISE_RGB 4
  // Workaround Adreno bug #1096 by using VLACHOS for Vulkan.
  -#if defined(TARGET_MOBILE)
  +#if defined(TARGET_MOBILE) && !defined(TARGET_VULKAN_ENVIRONMENT)
  #define DITHERING_OPERATOR DITHERING_INTERLEAVED_NOISE
  #else
  #define DITHERING_OPERATOR DITHERING_VLACHOS
  