language_extension: Handle prefixed WASI windows paths in extension spawning (#44477)

Closes https://github.com/zed-industries/zed/issues/12013

Release Notes:

- Fixed some wasm language extensions failing to spawn on windows
b79d92d1c6Lukas Wirth committed on 12/9/2025, 12:22:57 PM· committed by GitHubparent660234f
1 file changedLine totals unavailable