feat: add poll_now_notify to poll_loop and on_work_available callback#1893

Jeadie wants to merge 4 commits into

apache:mainapache/datafusion-ballista:mainfrom

spiceai:upstream/poll-now-notify-on-work-availablespiceai/datafusion-ballista:upstream/poll-now-notify-on-work-availableCopy head branch name to clipboard