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

[Tom Stellard via cfe-commits]

tstellar wrote:

Is there interest in backporting this to the release branch?  If so, can someone manually create a PR?

https://github.com/llvm/llvm-project/pull/127406