Change color channel AFTER cropping for legacy baselines, as some croppers...

Change color channel AFTER cropping for legacy baselines, as some croppers (mainly BoundingBoxCropAnnotator) use MTCNN internally which expects RGB images
4 jobs for boundingboxannotatorcrop-fixes in 27 minutes and 27 seconds (queued for 5 seconds)
Status Name Job ID Coverage
  Build
passed build_linux_37 #243656
docker

00:27:27

61.0%
passed build_linux_38 #243657
docker

00:24:48

61.0%
passed build_macos_intel_37 #243654
macos intel

00:20:47

54.0%
passed build_macos_intel_38 #243655
macos intel

00:17:12

55.0%