[clang-tools-extra] [clangd] [Modules] Fix to correctly handle module dependencies (PR #142828)

[Chuanqi Xu via cfe-commits]

https://github.com/ChuanqiXu9 approved this pull request.

LGTM then. Thanks.

BTW, clangd prefer unittests than lit test. So you'd better to use unittests next time.

https://github.com/llvm/llvm-project/pull/142828