[clang-tools-extra] [clang-tidy] `use-ranges`: preserve used `unique` results (PR #196035)

[Julian Schmidt via cfe-commits]

https://github.com/5chmidti approved this pull request.

LGTM

The ResultUsePolicy could have been an optional string, but with how it's implemented it opens up an extension to configure .begin() vs e.g. std::ranges::begin(...)

https://github.com/llvm/llvm-project/pull/196035