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

[via cfe-commits]

llvmbot wrote:

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Failed to cherry-pick: 93b0bf635a287aac55f6da39f38c1cf257efa824

https://github.com/llvm/llvm-project/actions/runs/15574087990

Please manually backport the fix and push it to your github fork.  Once this is done, please create a [pull request](https://github.com/llvm/llvm-project/compare)

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