[clang] [clang-scan-deps] Remove const from ModuleDeps loop to enable move. (PR #161109)

[Chuanqi Xu via cfe-commits]

https://github.com/ChuanqiXu9 commented:

Why is this a standalone PR? I feel this can be within other PR. The PR itself doesn't do anything.

https://github.com/llvm/llvm-project/pull/161109