[hail] Ensure that global values are optional coming from read (#7230)
[hail] Ensure that global values are optional coming from read (#7230)


danking/hail,danking/hail,hail-is/hail,cseed/hail,cseed/hail,cseed/hail,hail-is/hail,cseed/hail,hail-is/hail,hail-is/hail,danking/hail,danking/hail,cseed/hail,danking/hail,hail-is/hail,hail-is/hail,cseed/hail,cseed/hail,cseed/hail,danking/hail,danking/hail,hail-is/hail,danking/hail,hail-is/hail