windows: get pid with win32 api (#8785)

While trying to get mouse/keyboard support in for Windows I ran into a
stack overflow issue related to the pid being `-1`. Getting the proper
process ID seems to fix it.

Release Notes:

- Fixed stack overflow on Windows

crates/terminal/Cargo.toml

@@ -30,5 +30,11 @@ theme.workspace = true
 thiserror.workspace = true
 util.workspace = true
 
+[target.'cfg(windows)'.dependencies.windows]
+version = "0.53.0"
+features = [
+    "Win32_System_Threading",
+]
+
 [dev-dependencies]
 rand.workspace = true