[clang] [clang] Add missing canonicalization in int literal profile (PR #67822)

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https://github.com/DonatNagyE approved this pull request.

LGTM.

By the way, as I searched for other applications of the flag `Canonical`, I noticed that `StmtProfiler` has a `VisitType(QualType T)` method which "cheats" and just stores `T` as an opaque pointer. If the pointer value is canonical enough (which I presume), then calling that could provide a different way for implementing  `VisitIntegerLiteral` -- but the current code is also OK after your correction.

https://github.com/llvm/llvm-project/pull/67822