Allow scalar iteration in REPL tasks?

[maleadt]

I wonder if it would make sense and possible to allow scalar iteration in REPL tasks, which IIUC are only used to render the results of computations. There doesn't seem to be an API exposing this (the AST transforms affect the expressions that are evaluated in another task), but maybe we could access the task-local storage of Base.active_repl_backend.backend_task and allow scalar iteration there.