[CP] Do not try to load main/default asset image if only higher-res variants exist #128450
Description
Issue Link
Commit Hash
Target
stable
PR Link
Changelog Description
Restores the ability to define an asset that only has resolution-aware variants.
Impacted Users
all Flutter devs
Impact Description
Impacts the shipping production app. Customer apps on running on devices with low pixel densities may not be able to display assets.
Workaround
Yes. The user can still declare the resolution-aware variants explicitly in pubspec.yaml. They can also add the parent directory as an entry in pubspec.yaml.
Risk
low
Test Coverage
yes
Validation Steps
The original issue has a repro that can be tested with a low DPR device (like an iPhone 3 SE)