[clang-tools-extra] [clang-tidy] Add `IgnoredFilesList` option to `readability-duplicate-include` (PR #168196)

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zeyi2 wrote:

> There is a PR doing same things: #167046.

I think this PR is not actively being worked on, the issue got reassigned twice, please see https://github.com/llvm/llvm-project/issues/166938#issuecomment-3519168187

https://github.com/llvm/llvm-project/pull/168196