[risk=no] Add a spinner to the Workspace create/duplicate confirmation modal (#4422)
[risk=no] Add a spinner to the Workspace create/duplicate confirmation modal (#4422)


all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench,all-of-us/workbench