[clang] [clang-repl] Use canonical types in QualTypeToString (PR #190528)

[via cfe-commits]

llvmbot wrote:

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Failed to cherry-pick: ba28604

https://github.com/llvm/llvm-project/actions/runs/24005578393

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/190528