Detach completion confirmation task when selecting with mouse (#3078)

Otherwise the spawn to resolve the additional edits never runs causing
autocomplete to never add imports automatically when clicking with the
mouse

Release Notes:

- Fixed auto-complete additional edits, such as auto-import, not
applying when selecting a completion with a mouse click.
08361eb84eJulia committed on 10/2/2023, 5:32:06 PM· committed by GitHubparentsa785eb93d68fca
1 file changedLine totals unavailable