language server: Fix restarts sometimes not working for buffers open in go-to-definition view (#27655)

Closes #ISSUE

Release Notes:

- Fixed language server restarts sometimes not restarting a language
server.

crates/collab/src/tests/following_tests.rs

@@ -573,7 +573,7 @@ async fn test_following_tab_order(
     client_a
         .fs()
         .insert_tree(
-            "/a",
+            path!("/a"),
             json!({
                 "1.txt": "one",
                 "2.txt": "two",
@@ -581,7 +581,7 @@ async fn test_following_tab_order(
             }),
         )
         .await;
-    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
+    let (project_a, worktree_id) = client_a.build_local_project(path!("/a"), cx_a).await;
     active_call_a
         .update(cx_a, |call, cx| call.set_location(Some(&project_a), cx))
         .await