Diagnostics run `await.delay()` too often

還沒有人認領這個 Issue。

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?

首先檢視 PR 2664，並找出針對每個 AST 節點呼叫 await.delay() 的診斷路徑。比較互動式與非互動式行為，然後決定並測量一種能降低額外負擔、同時不移除互動式防護機制的重新排程策略。

由索引模型根據 Issue 內容生成。