[clang] [NFC][analyzer] Eliminate NodeBuilder from ExprEngine visit methods and from their utility methods (PR #212186)

[Balázs Benics via cfe-commits]

https://github.com/steakhal requested changes to this pull request.

I plan to come up with a counter example demonstrating that this is not an NFC.

https://github.com/llvm/llvm-project/pull/212186