ebe53d570a
For the necessary background knowledge, see the flutter.dev content on [Resolution-aware image assets](https://docs.flutter.dev/ui/assets/assets-and-images#resolution-aware) and [Conditional bundling of assets based on app flavor](https://docs.flutter.dev/ui/assets/assets-and-images#conditional-bundling-of-assets-based-on-app-flavor) if you don't have a basic understanding of these features. Fixes https://github.com/flutter/flutter/issues/151813 by using unique temporary directories, per asset file, for transformations. Currently, only a single directory is used and the name of the temporary files was based only on the basename of files. This means that `assets/image.png` and `assets/2x/image.png` would share an output path (`<temp dir path>/image.png`), causing a race. If this quick and rough explanation is a bit confusing, the original issueâ#151813âprovides a full repro and correct identification of the exact cause of the failure that can occur in the asset transformation process.