Foxconn Technology Group has asked hundreds of Chinese engineers and technicians to return home from its iPhone factories in India, dealing a blow to Apple Inc.’s manufacturing push in the South Asian country.The bulk of Foxconn’s Chinese staff at iPhone plants in southern India have been told to fly back in a move that began about two months ago, people familiar with the matter said, asking not to be named as the information is private. More than 300 Chinese workers have left, and mostly suppor...