windows: Get more tests passing (#39984)

Still got one more test in `project_tests.rs` to investigate...

Release Notes:

- N/A

---------

Co-authored-by: John Tur <john-tur@outlook.com>

crates/git_ui/src/project_diff.rs

@@ -1619,14 +1619,13 @@ mod tests {
         project_diff::{self, ProjectDiff},
     };
 
-    #[cfg_attr(windows, ignore = "currently fails on windows")]
     #[gpui::test]
     async fn test_go_to_prev_hunk_multibuffer(cx: &mut TestAppContext) {
         init_test(cx);
 
         let fs = FakeFs::new(cx.executor());
         fs.insert_tree(
-            "/a",
+            path!("/a"),
             json!({
                 ".git": {},
                 "a.txt": "created\n",
@@ -1637,7 +1636,7 @@ mod tests {
         .await;
 
         fs.set_head_and_index_for_repo(
-            Path::new("/a/.git"),
+            Path::new(path!("/a/.git")),
             &[
                 ("b.txt", "before\n".to_string()),
                 ("c.txt", "unchanged\n".to_string()),
@@ -1645,7 +1644,7 @@ mod tests {
             ],
         );
 
-        let project = Project::test(fs, [Path::new("/a")], cx).await;
+        let project = Project::test(fs, [Path::new(path!("/a"))], cx).await;
         let (workspace, cx) =
             cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 
@@ -1707,7 +1706,6 @@ mod tests {
         ));
     }
 
-    #[cfg_attr(windows, ignore = "currently fails on windows")]
     #[gpui::test]
     async fn test_excerpts_splitting_after_restoring_the_middle_excerpt(cx: &mut TestAppContext) {
         init_test(cx);
@@ -1747,7 +1745,7 @@ mod tests {
 
         let fs = FakeFs::new(cx.executor());
         fs.insert_tree(
-            "/a",
+            path!("/a"),
             json!({
                 ".git": {},
                 "main.rs": buffer_contents,
@@ -1756,11 +1754,11 @@ mod tests {
         .await;
 
         fs.set_head_and_index_for_repo(
-            Path::new("/a/.git"),
+            Path::new(path!("/a/.git")),
             &[("main.rs", git_contents.to_owned())],
         );
 
-        let project = Project::test(fs, [Path::new("/a")], cx).await;
+        let project = Project::test(fs, [Path::new(path!("/a"))], cx).await;
         let (workspace, cx) =
             cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 
@@ -1925,6 +1923,7 @@ mod tests {
         cx.run_until_parked();
 
         let editor = diff.read_with(cx, |diff, _| diff.editor.clone());
+
         assert_state_with_diff(
             &editor,
             cx,