c7eefdf7f0
Resolves https://github.com/flutter/flutter/issues/124956. Fixes some recent transform issues that mainly apply to chained filters (like when both a color + image filter has been set). - For all filters, the returned entity should just be an identity matrix because the snapshot transform gets fully absorbed. - For all filters, given entity's transform should be applied in the coverage proc (although this currently makes no difference because of the way coverage is queried when snapshotting). - For filters drawing with coverage + transforming UVs, the transform handed to the contents of the deferred entity needs to be applied. Otherwise the entity won't get repositioned correctly while snapshotting.