Photoshop CS6 used to have a"remove black fringe" menu, but I can't find that in Photoshop2022. I would select the white area, they apply a few 3-4 pixel feature (depending on the resolution of the image), and then stroke the left white sleave edge with a "Dodge " brush small, set to Mid tones, set to 3-6 Pixles to remove the grey line.