Generalize mpas_sphere_angle function to work for non-unit-radius spheres#1148

mgduda merged 1 commit intoMPAS-Dev:hotfix-v8.0.2MPAS-Dev/MPAS-Model:hotfix-v8.0.2from

mgduda:operators/sphere_angle_nonunit_radius_fixmgduda/MPAS-Model:operators/sphere_angle_nonunit_radius_fixCopy head branch name to clipboard