windows: Improve file_finder to support match with unix style path (#12357)

Release Notes:

- Improved file_finder to support match with Unix style path.


Sometimes we may get the Unix style path string, for example the result
of `git status`:

```bash
$ git status
On branch improve-file-finder-match-unix-paths
Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git restore <file>..." to discard changes in working directory)
        modified:   crates/file_finder/src/file_finder.rs
```

For example, from GitHub page:

<img width="760" alt="image"
src="https://github.com/zed-industries/zed/assets/5518/c6fe8d8a-839e-4eef-a162-43b1dde09593">

If we copy that path to file_finder, it will not match any files on
Windows.

## Before

<img width="699" alt="屏幕截图 2024-05-28 001037"
src="https://github.com/zed-industries/zed/assets/5518/2d2d729e-7d27-421b-9a38-cfe4e53cc033">


## After

Use Unix style path:

<img width="689" alt="屏幕截图 2024-05-28 001150"
src="https://github.com/zed-industries/zed/assets/5518/e82dc8d6-bd6c-4b78-bd91-5b5210da73c4">

Use Windows style path:

<img width="629" alt="屏幕截图 2024-05-28 001302"
src="https://github.com/zed-industries/zed/assets/5518/4892019e-b2f4-41aa-bbf7-2f5f8af7aafa">

crates/file_finder/src/file_finder.rs

@@ -793,17 +793,18 @@ impl PickerDelegate for FileFinderDelegate {
             cx.notify();
             Task::ready(())
         } else {
-            let query = PathLikeWithPosition::parse_str(raw_query, |path_like_str| {
-                Ok::<_, std::convert::Infallible>(FileSearchQuery {
-                    raw_query: raw_query.to_owned(),
-                    file_query_end: if path_like_str == raw_query {
-                        None
-                    } else {
-                        Some(path_like_str.len())
-                    },
+            let query =
+                PathLikeWithPosition::parse_str(&raw_query, |normalized_query, path_like_str| {
+                    Ok::<_, std::convert::Infallible>(FileSearchQuery {
+                        raw_query: normalized_query.to_owned(),
+                        file_query_end: if path_like_str == raw_query {
+                            None
+                        } else {
+                            Some(path_like_str.len())
+                        },
+                    })
                 })
-            })
-            .expect("infallible");
+                .expect("infallible");
 
             if Path::new(query.path_like.path_query()).is_absolute() {
                 self.lookup_absolute_path(query, cx)

crates/file_finder/src/file_finder_tests.rs

@@ -1855,9 +1855,9 @@ fn init_test(cx: &mut TestAppContext) -> Arc<AppState> {
 }
 
 fn test_path_like(test_str: &str) -> PathLikeWithPosition<FileSearchQuery> {
-    PathLikeWithPosition::parse_str(test_str, |path_like_str| {
+    PathLikeWithPosition::parse_str(test_str, |normalized_query, path_like_str| {
         Ok::<_, std::convert::Infallible>(FileSearchQuery {
-            raw_query: test_str.to_owned(),
+            raw_query: normalized_query.to_owned(),
             file_query_end: if path_like_str == test_str {
                 None
             } else {