Diagnostics run `await.delay()` too often

https://github.com/LuaLS/lua-language-server/pull/2664 got a 25% speed increase by disabling await.delay() for the non-interactive use case.

Many diagnostics call await.delay() for every single ast node they check, so running all diagnostics on a file will probably reschedule the thread more than once per node which is a significant overhead.

I guess fully removing it for the interactive use case isn't a great solution, but maybe there is some kind of middleground like only rescheduling only every n calls?

まず PR 2664 を確認し、各 AST ノードに対して await.delay() を呼び出す診断パスを特定します。インタラクティブな動作と非インタラクティブな動作を比較し、その後、インタラクティブなセーフガードを削除せずにオーバーヘッドを削減する再スケジューリング戦略を決定して測定します。