update accordion disabled item styling (transferred from ManageIQ/manageiq@17fe0f4d50ba83dd30413af66089c3dad6302273)
update accordion disabled item styling
(transferred from ManageIQ/manageiq@17fe0f4d50ba83dd30413af66089c3dad6302273)

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic