windows: Fix tests on Windows (#22616)

Release Notes:

- N/A

---------

Co-authored-by: Mikayla <mikayla.c.maki@gmail.com>

crates/recent_projects/src/recent_projects.rs

@@ -595,6 +595,7 @@ mod tests {
     use project::{project_settings::ProjectSettings, Project};
     use serde_json::json;
     use settings::SettingsStore;
+    use util::path;
     use workspace::{open_paths, AppState};
 
     use super::*;
@@ -615,7 +616,7 @@ mod tests {
             .fs
             .as_fake()
             .insert_tree(
-                "/dir",
+                path!("/dir"),
                 json!({
                     "main.ts": "a"
                 }),
@@ -623,7 +624,7 @@ mod tests {
             .await;
         cx.update(|cx| {
             open_paths(
-                &[PathBuf::from("/dir/main.ts")],
+                &[PathBuf::from(path!("/dir/main.ts"))],
                 app_state,
                 workspace::OpenOptions::default(),
                 cx,