gpui(windows): Move jumplist creation to background thread (#47956)

This can block the main thread too much otherwise

Release Notes:

- N/A *or* Added/Fixed/Improved ...
19765cd0b4Lukas Wirth committed on 1/30/2026, 8:10:19 AM· committed by GitHubparent28f0461
5 files changedLine totals unavailable