[Question] Why is `ignoreSubmodules` by default true?

還沒有人認領這個 Issue。

The title is my question.

To be more clear, I didn't know this option for years, and always kept seeing 3K errors of undeclared global values that are defined in my submodules. This almost keeps me away from this language server, and I think it is the same for some other people (although I didn't find any issue in this repo reporting such problem).

Is there any particular reason to ignore submodules by default? If this is reasonable, maybe we should prompt the user to let them choose whether they want to ignore submodules? Or we can keep this option to be `false` by default, and make ignoring submodule an extra `diagnostics.disable`?

首先調查 issue 中描述的 `ignoreSubmodules` 選項及相關的 `diagnostics.disable` 行為。確定子模組預設會被忽略的原因，然後比較所提出的預設值方案和提示方案；當專案達成明確且一致同意的決定，並實現相應行為時，這項工作就完成了。

由索引模型根據 Issue 內容生成。