[clang] [StaticAnalyzer] Fix state update in VisitObjCForCollectionStmt (PR #124477)

[Balazs Benics via cfe-commits]

steakhal wrote:

@ziqingluo-90 I noticed you do a lot of force pushes.
In general, you should strive for avoiding those and prefer merges instead, as per the usualy GitHub workflow.

Remember, at llvm, a PR can only be merged using squash-merge anyways, so your history would vanish regardless.

https://github.com/llvm/llvm-project/pull/124477