Make save all prompt less noisy (#24934)

Don't show clean items from dirty multibuffers, and dedupe filenames in
case you have a file open in a buffer and a multibuffer

Release Notes:

- N/A
79e3faffb2Conrad Irwin committed on 2/15/2025, 5:40:14 AM· committed by GitHubparente0fc767
2 files changedLine totals unavailable