[clang] [analyzer] TaintPropagation checker strlen() should not propagate (PR #66086)

[Daniel Krupp via cfe-commits]

dkrupp wrote:

> As I'm not a maintainer, I could not push to your branch. Here is a patch that I think has the missing pieces to satisfy my review. [0001-fixup-analyzer-TaintPropagation-checker-strlen-shoul.patch.txt](https://github.com/llvm/llvm-project/files/12645128/0001-fixup-analyzer-TaintPropagation-checker-strlen-shoul.patch.txt) Apply it to your branch by `git am 0001-fixup-analyzer-TaintPropagation-checker-strlen-shoul.patch.txt`. After that, I'm okay to squash merge this PR, if you are also okay with my suggestions.

Thanks for the suggestions. I squashed it.

https://github.com/llvm/llvm-project/pull/66086