chore: Bump Rust to 1.87 (#30739)

Closes #ISSUE

Release Notes:

- N/A

crates/project/src/manifest_tree/path_trie.rs

@@ -98,7 +98,7 @@ impl<Label: Ord + Clone> RootPathTrie<Label> {
             };
         }
         if !current.labels.is_empty() {
-            (callback)(&current.worktree_relative_path, &current.labels);
+            let _ = (callback)(&current.worktree_relative_path, &current.labels);
         }
     }