[clang] [Clang][ExprConstant] Normalize aux target builtin IDs before dispatch (PR #201805)

[via cfe-commits]

Sirraide wrote:

> could you please take a look at why the patch need 2 pending checks?

@yaohuihan-iluvatar This has to do w/ how the LLVM repository is configured: for prs from a first-time contributor, someone w/ write access has to approve the CI workflows every time the pr is updated before they actually run

https://github.com/llvm/llvm-project/pull/201805