Disable 'Upload' button on Import Widgets page when no file is chosen (transferred from ManageIQ/manageiq@54e3ae587a57c6b436846d0f72b12cb91d2d8a8a)
Disable 'Upload' button on Import Widgets page
when no file is chosen
(transferred from ManageIQ/manageiq@54e3ae587a57c6b436846d0f72b12cb91d2d8a8a)

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