[clang] [clang][analysis] Fix flaky clang/test/Analysis/live-stmts.cpp test (2nd attempt) (PR #127406)

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llvmbot wrote:

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Failed to cherry-pick: f378e52ed3c6f8da4973f97f1ef043c2eb0da721

https://github.com/llvm/llvm-project/actions/runs/13534670364

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/127406