Properly open worktrees when cmd-clicking in terminal or on inlay hints (#19280)

* uses the state that's synced, to fetch the language server name
* uses proper, canonicalized path when creating a remote ssh worktree,
otherwise `~/foo/something` stays unexpanded

Release Notes:

- N/A

crates/proto/proto/zed.proto

@@ -2464,6 +2464,7 @@ message AddWorktree {
 
 message AddWorktreeResponse {
     uint64 worktree_id = 1;
+    string canonicalized_path = 2;
 }
 
 message UpdateUserSettings {