[clang] [clang-format] Merge short inline function in macro definition body (PR #140366)

[via cfe-commits]

llvmbot wrote:

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Failed to cherry-pick: 6da2acf8e99ec517bfbe498af2519d29834e2583

https://github.com/llvm/llvm-project/actions/runs/15177852679

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/140366