Finish removing git repository state and scanning logic from worktrees (#27568)

This PR completes the process of moving git repository state storage and
scanning logic from the worktree crate to `project::git_store`.

Release Notes:

- N/A

---------

Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>
Co-authored-by: Conrad <conrad@zed.dev>

crates/project/src/task_store.rs

@@ -298,7 +298,7 @@ fn local_task_context_for_location(
         let worktree_abs_path = worktree_abs_path.clone();
         let project_env = environment
             .update(cx, |environment, cx| {
-                environment.get_environment(worktree_id, worktree_abs_path.clone(), cx)
+                environment.get_environment(worktree_abs_path.clone(), cx)
             })
             .ok()?
             .await;