gpui_windows: Avoid process-wide priority elevation (#56050)

We were incorrectly calling this with a thread handle, additionally
changing the process priority here doesn't make sense, so just drop
this.

Release Notes:

- N/A or Added/Fixed/Improved ...

---------

Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>
5c0b33f72eLukas Wirth committed on 5/7/2026, 2:09:39 PM· committed by GitHubparent7556cf8
1 file changedLine totals unavailable