debugger: Use current worktree directory when spawning an adapter (#31054)

/cc @osiewicz 

I think bringing this back should fix **bloveless** his issue with go
debugger.
This is also nice, so people are not forced to give us a working
directory, because most adapters will use their **cwd** as the project
root directory. For JavaScript, you don't need to specify the **cwd**
anymore because it can already infer it

Release Notes:

- debugger beta: Fixed some adapters fail to determine the right root level of the
debug program.

crates/dap_adapters/src/javascript.rs

@@ -86,7 +86,7 @@ impl JsDebugAdapter {
                 port.to_string(),
                 host.to_string(),
             ],
-            cwd: None,
+            cwd: Some(delegate.worktree_root_path().to_path_buf()),
             envs: HashMap::default(),
             connection: Some(adapters::TcpArguments {
                 host,