Improve performance of project panel with many git statuses (#25465)

Closes #ISSUE

Release Notes:

- Improved performance of project panel in large git repositories

crates/worktree/src/worktree.rs

@@ -206,15 +206,19 @@ pub struct RepositoryEntry {
     pub current_merge_conflicts: TreeSet<RepoPath>,
 }
 
-impl Deref for RepositoryEntry {
-    type Target = WorkDirectory;
-
-    fn deref(&self) -> &Self::Target {
-        &self.work_directory
-    }
-}
-
 impl RepositoryEntry {
+    pub fn relativize(&self, path: &Path) -> Result<RepoPath> {
+        self.work_directory.relativize(path)
+    }
+
+    pub fn unrelativize(&self, path: &RepoPath) -> Option<Arc<Path>> {
+        self.work_directory.unrelativize(path)
+    }
+
+    pub fn directory_contains(&self, path: impl AsRef<Path>) -> bool {
+        self.work_directory.directory_contains(path)
+    }
+
     pub fn branch(&self) -> Option<&Branch> {
         self.current_branch.as_ref()
     }
@@ -2834,7 +2838,7 @@ impl Snapshot {
     pub fn repository_for_path(&self, path: &Path) -> Option<&RepositoryEntry> {
         self.repositories
             .iter()
-            .filter(|repo| repo.work_directory.directory_contains(path))
+            .filter(|repo| repo.directory_contains(path))
             .last()
     }
 
@@ -6023,7 +6027,13 @@ impl<'a> GitTraversal<'a> {
         };
 
         // Update our state if we changed repositories.
-        if reset || self.repo_location.as_ref().map(|(prev_repo, _)| prev_repo) != Some(&repo) {
+        if reset
+            || self
+                .repo_location
+                .as_ref()
+                .map(|(prev_repo, _)| &prev_repo.work_directory)
+                != Some(&repo.work_directory)
+        {
             self.repo_location = Some((repo, repo.statuses_by_path.cursor::<PathProgress>(&())));
         }