extension_host: Run extensions on the tokio threadpool (#40936)

Fixes ZED-12D

`wasmtime_wasi` might call into tokio futures (to sleep for example)
which requires access to the tokio runtime. So we are required to run
these extensions in the tokio thread pool

Release Notes:

- Fixed extensions causing zed to occasionally panic
278032c6b8Lukas Wirth committed on 10/23/2025, 7:41:05 AM· committed by GitHubparent5a05986
5 files changedLine totals unavailable