[clang] [analyzer] Print the PostInitializer target in exploded-graph-rewriter (PR #116034)

[Donát Nagy via cfe-commits]

https://github.com/NagyDonat approved this pull request.

Sorry for missing this review, I didn't noticed that this is distinct from the similar `CallEnter` change.

https://github.com/llvm/llvm-project/pull/116034